DP Chemistry Questionbank
Topic 10: Organic chemistry
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[N/A]Directly related questions
- 18M.1.sl.TZ1.25: What is the product of the reaction between hex-3-ene and steam? A. Hexan-1-ol B. ...
- 18M.1.sl.TZ1.24: What are possible names of a molecule with molecular formula C4H10O? I. ...
- 18M.1.sl.TZ1.26: Which of these reactions proceeds by a free radical mechanism in the presence of UV light? A. ...
-
18M.2.sl.TZ1.3a.ii:
Outline the formation of polyethene from ethene by drawing three repeating units of the polymer.
-
18M.2.sl.TZ1.3d:
State the characteristic reaction mechanism of benzene.
- 22M.1.sl.TZ1.24: Which functional groups are present in serine? A. nitro, carbonyl and carboxyl B. amino,...
- 18M.1.sl.TZ2.26: What is the mechanism for the reaction of propene with iodine in the dark? A. electrophilic...
- 18M.1.sl.TZ2.24: Which compounds belong to the same homologous series? A. CHCCH2CH3, CHCCH2CH2CH3 B. ...
-
22M.2.hl.TZ1.5a(i):
State the name of Compound B, applying International Union of Pure and Applied Chemistry (IUPAC) rules.
- 22M.2.hl.TZ1.5b(i): Draw the structural formula of the alkene required.
- 22M.2.hl.TZ1.5b(iii): Deduce the structural formula of the repeating unit of the polymer formed from this alkene.
-
22M.2.hl.TZ1.5c:
Deduce what would be observed when Compound B is warmed with acidified aqueous potassium dichromate (VI).
-
22M.1.sl.TZ1.26:
Which reagents and conditions are best for converting propan-1-ol into propanoic acid?
A. Reflux with acidified potassium dichromate (VI)
B. Reflux with aqueous sodium hydroxide
C. Distil with acidified potassium dichromate (VI)
D. Distil with aqueous sodium hydroxide
- 22M.1.sl.TZ1.27: What is produced when chlorobutane is treated with aqueous sodium hydroxide solution? A. ...
- 17N.1.sl.TZ0.28: How many structural isomers of C6H14 exist? A. 4 B. 5 C. 6 D. 7
-
16N.3.sl.TZ0.9b:
The structures of two molecules, X and Y, are shown below.
(i) Justify why both these molecules are carbohydrates.
(ii) Distinguish between these molecules in terms of their functional groups.
- 22M.2.sl.TZ1.3d(i): Draw the structural formula of the alkene required.
- 22M.2.sl.TZ1.3f(i): Identify the type of reaction.
-
22M.2.sl.TZ1.3e:
Deduce what would be observed when Compound B is warmed with acidified aqueous potassium dichromate (VI).
- 19N.2.sl.TZ0.3e: Ethene is often polymerized. Draw a section of the resulting polymer, showing two repeating units.
-
22M.1.hl.TZ1.34:
Which reagents and conditions are best for converting propan-1-ol into propanoic acid?
A. Reflux with acidified potassium dichromate (VI)
B. Reflux with LiAlH4
C. Distil with acidified potassium dichromate (VI)
D. Distil with LiAlH4
- 17N.1.sl.TZ0.26: What is the name of this compound, using IUPAC rules? A. 3-methylbutan-3-ol B....
-
19N.2.sl.TZ0.3c(i):
Write an equation for the complete combustion of the organic product in (b).
- 16N.2.sl.TZ0.1b: Determine the average oxidation state of carbon in ethene and in...
-
17M.3.hl.TZ2.3c.ii:
Suggest, giving one reason, whether this is an addition or condensation reaction.
- 22M.1.sl.TZ2.24: How many dichlorinated butane isomers can be formed by the halogenation of CH3CH2CH2CH3 with...
- 22M.1.sl.TZ2.27: Which reaction mechanisms are typical for alcohols and halogenoalkanes?
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18M.2.sl.TZ2.7b.ii:
The aldehyde can be further oxidized to a carboxylic acid.
Outline how the experimental procedures differ for the synthesis of the aldehyde and the carboxylic acid.
- 17M.1.sl.TZ1.24: What is the order of increasing boiling point? A. C4H10 < CH3COOH < CH3CH2CHO <...
-
17M.3.sl.TZ2.10a:
Identify the functional groups which are present in only one structure of glucose.
- 18M.1.hl.TZ2.35: Which is the correct combination of substitution reaction mechanisms?
-
22M.1.hl.TZ2.35:
Which reaction involves homolytic fission?
A. CH4 + Cl2
B. CH3Br + NaOH
C. (CH3)3CBr + NaOH
D. C6H6 + HNO3 + H2SO4
- 18M.1.hl.TZ1.34: Which is a secondary alcohol?
- 18M.1.hl.TZ1.33: Which monomer could create this polymer? A. But-2-ene B. But-1-ene C. ...
- 17M.1.sl.TZ2.26: Which conditions are used to convert ethanol to ethanal? A. Excess oxidizing agent and...
- 16N.2.sl.TZ0.5a: Draw the full structural formulas of propane and propene.
-
22M.2.sl.TZ2.4d(ii):
Write the equation for the reaction between but-2-ene and hydrogen bromide.
-
22M.2.sl.TZ2.4d(iii):
State the type of reaction.
-
17M.2.sl.TZ1.5d:
Chloroethene, C2H3Cl, can undergo polymerization. Draw a section of the polymer with three repeating units.
- 17M.1.sl.TZ2.25: Which describes the reaction between a halogen and ethane?
- 17M.1.hl.TZ2.36: Which compounds can be reduced? I. C2H4II. CH3COOHIII. CH3CHO A. I and II...
- 16N.1.sl.TZ0.23: The structure of a drug used to treat symptoms of Alzheimer’s disease is shown below. Which...
-
17M.2.hl.TZ2.6b:
The overall equation for monochlorination of methane is:
CH4(g) + Cl2(g) → CH3Cl(g) + HCl(g)
Calculate the standard enthalpy change for the reaction, ΔH θ, using section 12 of the data booklet.
-
19N.3.hl.TZ0.10a:
Draw the structure of the dipeptide Asp–Phe using section 33 of the data booklet.
- 19N.3.hl.TZ0.15c: Explain why maltose, C12H22O11, is soluble in water.
- 19N.3.hl.TZ0.14c: Vitamins are organic compounds essential in small amounts. State the name of one functional...
-
19M.1.hl.TZ2.35:
What must be present on a nucleophile?
A. Negative charge
B. Lone pair of electrons
C. Positive charge
D. Symmetrical distribution of electrons
-
19M.1.sl.TZ1.27:
Which alcohol would produce a carboxylic acid when heated with acidified potassium dichromate(VI)?
A. propan-2-ol
B. butan-1-ol
C. 2-methylpropan-2-ol
D. pentan-3-ol
- 19N.1.sl.TZ0.26: What type of reaction occurs when C6H13Br becomes C6H13OH? A. Nucleophilic substitution B. ...
-
18M.2.hl.TZ2.9a.i:
Deduce the structural formulas of the two possible isomers.
-
17M.3.sl.TZ1.10b.ii:
Explain why the difference in their structures affects their melting points.
- 18M.1.hl.TZ1.40: Which would be the most effective method to distinguish between liquid propan-1-ol and...
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18M.2.hl.TZ1.7c.iii:
Deduce the name of the class of compound formed when the product of (c)(i) reacts with butanoic acid.
- 18M.1.sl.TZ2.27: Which are structural isomers? I. CH3CH2OH and CH3OCH3 II. HOCH2CH3 and...
-
18M.2.hl.TZ1.3a.ii:
Outline the formation of polyethene from ethene by drawing three repeating units of the polymer.
-
20N.2.hl.TZ0.1d(i):
State the type of reaction occurring when ethane reacts with chlorine to produce chloroethane.
- 18M.1.sl.TZ2.25: What is the name of this compound, using IUPAC rules? A. 1,1-dimethylpropanoic acid B. ...
-
18M.2.hl.TZ1.3a.i:
Ethyne, like ethene, undergoes hydrogenation to form ethane. State the conditions required.
- 22M.2.hl.TZ2.8d(iii): State the type of reaction.
- 22M.2.hl.TZ2.8b: State two features showing that propane and butane are members of the same homologous series.
-
22M.2.hl.TZ2.8d(ii):
Write the equation for the reaction between but-2-ene and hydrogen bromide.
- 16N.3.sl.TZ0.17b: Oseltamivir does not possess the carboxyl group needed for activity until it is chemically...
-
18N.1.sl.TZ0.27:
Which compounds react to form CH3CH2CH2COOCH(CH3)2?
A. propanoic acid and propan-2-ol
B. propanoic acid and butan-2-ol
C. butanoic acid and propan-1-ol
D. butanoic acid and propan-2-ol
- 18N.1.sl.TZ0.26: Which is correct for benzene? A. It readily undergoes addition reactions and decolourises...
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18N.2.hl.TZ0.2d:
The compound could not be oxidized using acidifi ed potassium dichromate(VI).
Deduce the structural formula of the compound.
- 18N.2.sl.TZ0.2c: Classify propan-2-ol as a primary, secondary or tertiary alcohol, giving a reason.
-
18N.2.sl.TZ0.2a:
Draw the structural formula of propan-2-ol.
-
18N.2.sl.TZ0.2d.i:
State a suitable oxidizing agent for the oxidation of propan-2-ol in an acidified aqueous solution.
-
18N.2.sl.TZ0.2d.iii:
Deduce the product of the oxidation of propan-2-ol with the oxidizing agent in (d)(i).
- 18N.2.hl.TZ0.9b: Classify 1-bromopropane as a primary, secondary or tertiary halogenoalkane, giving a reason.
- 18N.2.hl.TZ0.9a: State a reason why most halogenoalkanes are more reactive than alkanes.
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18N.2.hl.TZ0.8b.i:
Draw two structural isomers of methyloxirane.
- 18N.2.sl.TZ0.7a: Identify the type of reaction in step 1.
- 17M.1.sl.TZ1.26: What is the name of the compound with this molecular structure applying IUPAC rules? A. ...
-
19M.2.sl.TZ1.1c(i):
Identify the initiation step of the reaction and its conditions.
-
16N.1.sl.TZ0.24:
Which alcohols are oxidized by acidified potassium dichromate(VI) solution when heated?
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
-
17M.3.hl.TZ1.9a:
Deduce the repeating unit of the polymer and the other product of the reaction.
-
18M.2.sl.TZ2.7b.i:
Formulate the ionic equation for the oxidation of propan-1-ol to the corresponding aldehyde by acidified dichromate(VI) ions. Use section 24 of the data booklet.
- 19N.3.sl.TZ0.10c: Explain why maltose, C12H22O11, is soluble in water.
- 19N.3.sl.TZ0.10a: State the name of one functional group common to all three vitamins shown in section 35 of the...
-
19N.2.sl.TZ0.3d(ii):
Explain why the compound C2H6O, produced in (b), has a higher boiling point than compound C2H4O, produced in d(i).
-
19N.2.sl.TZ0.3b:
Write an equation for the reaction of C2H5Cl with aqueous sodium hydroxide to produce a C2H6O compound, showing structural formulas.
- 19M.1.hl.TZ1.32: What is the IUPAC name of the following molecule? A. 2-bromo-3-ethylbutane B....
-
19M.1.hl.TZ1.34:
Which alcohol would produce a carboxylic acid when heated with acidified potassium dichromate(VI)?
A. propan-2-ol
B. butan-1-ol
C. 2-methylpropan-2-ol
D. pentan-3-ol
- 19M.1.hl.TZ2.34: What is the name of this compound using IUPAC rules? A. 2,3-diethylbutane B....
-
16N.2.sl.TZ0.5b:
Both propane and propene react with bromine.
(i) State an equation and the condition required for the reaction of 1 mol of propane with 1 mol of bromine.
(ii) State an equation for the reaction of 1 mol of propene with 1 mol of bromine.
(iii) State the type of each reaction with bromine.
Propane:
Propene:
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16N.2.sl.TZ0.1d:
Ethane-1,2-diol can be oxidized first to ethanedioic acid, (COOH)2, and then to carbon dioxide and water. Suggest the reagents to oxidize ethane-1,2-diol.
-
17M.1.hl.TZ2.37:
In which order should the reagents be used to convert benzene into phenylamine (aniline)?
-
19M.2.hl.TZ1.2c:
Outline one piece of physical evidence for the structure of the benzene ring.
-
18N.1.sl.TZ0.24:
Which compounds cause the colour of acidified potassium manganate(VII) solution to change from purple to colourless?
I. CH3CH2CH2CH2OH
II. (CH3)3CCH2OH
III. CH3CH2CH(OH)CH3
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
-
19M.2.hl.TZ2.1c(i):
State the name of product B, applying IUPAC rules.
-
19M.2.sl.TZ1.1b:
Draw the structure of one other isomer of xylene which retains the benzene ring.
-
19M.3.sl.TZ1.5a:
State the name of the functional group which allows the molecule to be responsive to applied electric fields.
- 19M.1.sl.TZ1.26: What is the mechanism of the reaction between alkenes and halogens in the absence of light? A....
- 19M.1.sl.TZ1.24: Which functional group is surrounded in the molecule? A. hydroxyl B. carboxyl C. carbonyl...
- 19M.1.sl.TZ1.25: What is the IUPAC name of the following molecule? A. 2-bromo-3-ethylbutane B....
-
19M.1.sl.TZ2.26:
Methane reacts with chlorine in sunlight.
CH4 (g) + Cl2 (g) → CH3Cl (g) + HCl (g)
Which type of reaction occurs?
A. free-radical substitution
B. electrophilic substitution
C. nucleophilic substitution
D. electrophilic addition
- 17N.1.hl.TZ0.38: Which functional group is responsible for the pKb of 4.1 in this compound? A. Amido B....
-
16N.3.sl.TZ0.20a:
Compare and contrast the functional groups present in methadone and diamorphine (heroin), giving their names. Use section 37 of the data booklet.
-
18M.2.hl.TZ1.7c.i:
State the organic product of the reaction between 1-chlorobutane, CH3CH2CH2CH2Cl, and aqueous sodium hydroxide.
-
19M.1.sl.TZ2.24:
Which compound has the lowest boiling point?
A. CH3CH2CH2CH2CH2CH3
B. CH3CH2CH2CH2CH3
C. CH3CH(CH3)CH2CH3
D. CH3C(CH3)2CH3
- 19M.1.sl.TZ2.25: Which of the following can be both formed from bromoethane and converted directly into...
-
19M.2.hl.TZ2.1a:
Write an equation for the complete combustion of ethyne.
-
22M.1.sl.TZ2.25:
Which structure represents a repeating unit of a polymer formed from propene?
A. –CH2–CH(CH3)–
B. –CH2–CH2–CH2–
C. –CH(CH3)–CH(CH3)–
D. –CH2–CH2–
-
19M.1.hl.TZ2.32:
Which compound has the lowest boiling point?
A. CH3CH2CH2CH2CH2CH3
B. CH3CH2CH2CH2CH3
C. CH3CH(CH3)CH2CH3
D. CH3C(CH3)2CH3
-
17N.2.sl.TZ0.6a.i:
Deduce the type of chemical reaction and the reagents used to distinguish between these compounds.
- 22M.1.sl.TZ1.25: Which compounds are members of the same homologous series? A. propanal, propanone, propanoic...
- 17M.1.sl.TZ2.24: Which functional group is present in paracetamol? A. Carboxyl B. Amino C. ...
- 17M.1.hl.TZ1.35: What is the major product of the reaction between 2-methylbut-2-ene and hydrogen bromide? A. ...
-
17M.3.sl.TZ1.15b:
Deduce the formula of the biodiesel formed when the vegetable oil shown is reacted with the reagents in (a).
-
17M.2.hl.TZ2.7c.i:
State the reagents and the name of the mechanism for the nitration of benzene.
- 17N.1.sl.TZ0.27: Which type of reaction occurs between an alcohol and a carboxylic acid? A. Addition B....
- 16N.1.sl.TZ0.26: Which type of reaction occurs when methanol and propanoic acid react together in the presence of...
-
17M.1.sl.TZ2.27:
Which compound contains a secondary carbon atom?
A. CH3CH(Cl)CH(CH3)2
B. (CH3)2CHCH2Cl
C. (CH3)3CCl
D. CH3CH2Cl
-
16N.1.sl.TZ0.25:
Which monomer is used to form the polymer with the following repeating unit?
A. CH3CH=CHCH3
B. CH3CH2CH=CH2
C. CH3CH2CH2CH3
D. (CH3)2C=CH2
- 16N.3.sl.TZ0.2b: In trial 3, the students noticed that after heating, the crucible had turned black on the...
- 16N.3.sl.TZ0.10a: State the IUPAC name for leucine.
-
17M.1.sl.TZ1.27:
Which molecule has a tertiary nitrogen?
A. (CH3)2NH
B. (C2H5)4N+I−
C. C3H7N(CH3)2
D. C6H5NH2
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19M.2.sl.TZ1.1c(ii):
1,4-dimethylbenzene reacts as a substituted alkane. Draw the structures of the two products of the overall reaction when one molecule of bromine reacts with one molecule of 1,4-dimethylbenzene.
-
17M.2.hl.TZ2.7a.iii:
Suggest the structural formula of this compound.
-
17N.1.sl.TZ0.25:
Which compound can be oxidized when heated with an acidified solution of potassium dichromate(VI)?
A. CH3C(O)CH2CH3
B. CH3CH2CH(OH)CH3
C. (CH3)3COH
D. CH3(CH2)2COOH
- 17N.3.sl.TZ0.8b.i: State the type of reaction occurring during the titration.
-
17N.2.sl.TZ0.6b:
Explain, with the help of equations, the mechanism of the free-radical substitution reaction of ethane with bromine in presence of sunlight.
- 17N.1.sl.TZ0.24: What is the major product of the reaction between HCl and but-2-ene? A. 1,2-dichlorobutane B....
-
17M.2.hl.TZ1.7c:
State the reagents used to convert benzene to nitrobenzene and the formula of the electrophile formed.
-
19M.2.hl.TZ1.1d(i):
Identify the initiation step of the reaction and its conditions.
-
19N.3.sl.TZ0.7a:
Draw the structure of the dipeptide Asp–Phe using section 33 of the data booklet.
- 19N.3.sl.TZ0.9d(i): State one similarity and one difference in composition between phospholipids and...
- 19N.2.sl.TZ0.3a: State the type of reaction which converts ethene into C2H5Cl.
- 19N.3.hl.TZ0.12c: State one similarity and one difference in composition between phospholipids and...
-
19N.2.hl.TZ0.3d(iii):
Explain why the 1H NMR spectrum of C3H6O, produced in (d)(i), shows only one signal.
-
18M.1.sl.TZ1.27:
Which compound could be formed when CH3CH2CH2OH is heated with acidified potassium dichromate(VI)?
I. CH3CH2CHO
II. CH3CH2COOH
III. CH3COCH3
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
-
17M.2.hl.TZ2.9b.i:
Hydrogenation of propene produces propane. Calculate the standard entropy change, ΔS θ, for the hydrogenation of propene.
- 21N.2.sl.TZ0.4a(i): Identify the type of reaction.
- 19N.2.hl.TZ0.3a(i): State the type of reaction.
- 19N.2.hl.TZ0.3a(ii): State the IUPAC name of the major product.
-
19N.2.hl.TZ0.3c(i):
Write an equation for the complete combustion of the compound C3H8O formed in (a)(iv).
- 19N.2.hl.TZ0.3e: Propene is often polymerized. Draw a section of the resulting polymer, showing two repeating units.
-
17M.2.hl.TZ2.7b.ii:
Deduce the structural formula of the main organic product when hex-1-ene reacts with hydrogen bromide.
-
19N.3.hl.TZ0.5a:
Draw the structure of the monomers of Kevlar® if the by-product of the condensation polymerization is hydrogen chloride.
-
19N.3.sl.TZ0.14a:
Write the equation for the complete combustion of ethanol.
- 19N.3.sl.TZ0.12b(i): Reforming reactions are used to increase the octane number of a hydrocarbon fuel. Suggest the...
- 19N.3.sl.TZ0.12b(ii): The 1H NMR spectrum of one of the products has four signals. The integration trace shows a ratio...
-
19N.3.hl.TZ0.24a:
Infrared (IR) spectroscopy is used to identify functional groups in organic compounds.
Deduce the wavenumber, in cm−1, of an absorption peak found in the IR spectrum of testosterone but not in that of cholesterol.
-
17M.3.hl.TZ2.3c.iii:
Subsequent steps proceed under differing conditions, forming the dendrimer polymer with the following repeating unit.
State the name of one functional group in this repeating unit.
-
19N.2.hl.TZ0.3d(ii):
Explain why the compound C3H8O, produced in (a)(iv), has a higher boiling point than compound C3H6O, produced in d(i).
-
17M.2.sl.TZ1.6b:
State the typical reactions that benzene and cyclohexene undergo with bromine.
-
17M.1.sl.TZ1.25:
What are the functional groups in the aspirin molecule?
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
-
17M.2.sl.TZ1.6a:
Discuss the physical evidence for the structure of benzene.
-
18M.2.hl.TZ1.3b:
Ethyne reacts with chlorine in a similar way to ethene. Formulate equations for the following reactions.
-
18M.2.sl.TZ1.3a.i:
Ethyne, like ethene, undergoes hydrogenation to form ethane. State the conditions required.
-
19M.1.hl.TZ2.33:
Methane reacts with chlorine in sunlight.
CH4 (g) + Cl2 (g) → CH3Cl (g) + HCl (g)
Which type of reaction occurs?
A. free-radical substitution
B. electrophilic substitution
C. nucleophilic substitution
D. electrophilic addition
- 21M.1.sl.TZ2.25: What is the IUPAC name of the molecule shown? A. 2,4-dimethylhexane B. ...
- 21M.2.hl.TZ1.5e(iv): Propan-2-ol can also be formed in one step from a compound containing a carbonyl group. State...
-
17M.2.hl.TZ2.7b.i:
Bromine was added to hexane, hex-1-ene and benzene. Identify the compound(s) which will react with bromine in a well-lit laboratory.
-
18N.1.sl.TZ0.25:
What is the order of increasing boiling point for the isomers of C5H12?
A. CH3CH2CH2CH2CH3 < CH3CH(CH3)CH2CH3 < CH3C(CH3)3
B. CH3C(CH3)3 < CH3CH(CH3)CH2CH3 < CH3CH2CH2CH2CH3
C. CH3C(CH3)3 < CH3CH2CH2CH2CH3 < CH3CH(CH3)CH2CH3
D. CH3CH(CH3)CH2CH3 < CH3C(CH3)3 < CH3CH2CH2CH2CH3
-
19M.2.sl.TZ2.1c(ii):
State the name of product B, applying IUPAC rules.
-
19M.2.sl.TZ2.1a:
Write an equation for the complete combustion of ethyne.
-
17M.2.sl.TZ2.6c:
Polyvinyl chloride (PVC) is a polymer with the following structure.
State the structural formula for the monomer of PVC.
-
18M.2.hl.TZ1.3d:
One possible Lewis structure for benzene is shown.
State one piece of physical evidence that this structure is incorrect.
-
17M.2.sl.TZ1.5a:
Ethane, C2H6, reacts with chlorine in sunlight. State the type of this reaction and the name of the mechanism by which it occurs.
-
20N.1.hl.TZ0.40:
Which compound with the molecular formula has this high resolution ?
From: libretexts.org. Courtesy of Chris Schaller, Professor (Chemistry)
at College of Saint Benedict/Saint John’s University.A. but-3-en-2-ol,
B. butanal,
C. butanone,
D. but-3-en-1-ol,
-
17M.2.sl.TZ2.6b:
Bromine was added to hexane, hex-1-ene and benzene. Identify the compound(s) which will react with bromine in a well-lit laboratory.
-
19N.2.hl.TZ0.3d(i):
State the reagents for the conversion of the compound C3H8O formed in (a)(iv) into C3H6O.
-
17M.3.sl.TZ1.10b.i:
Describe the difference in their structures.
- 19N.1.sl.TZ0.25: Which compound is not in the same homologous series as the others? A. C5H12 B. C6H12 C. ...
- 21N.1.sl.TZ0.26: Which pair of compounds are structural isomers? A. Propane and propene B. Propanal and...
- 21N.1.sl.TZ0.27: What is the general formula of alkynes? A. CnH2n+2 B. CnH2n C. CnH2n−2 D. CnHn
- 19N.1.sl.TZ0.28: Which compound cannot undergo addition polymerization?
- 19N.1.sl.TZ0.27: Which will react with a halogen by an electrophilic substitution mechanism?
-
18M.3.sl.TZ2.2a:
Describe two differences, other than the number of atoms, between the models of ethane and ethene constructed from the kit shown.
- 19N.3.sl.TZ0.15a: State the names of two functional groups present in all three molecules, using section 37 of the...
- 19N.3.sl.TZ0.9b: State one impact on health of the increase in LDL cholesterol concentration in blood.
-
19M.2.hl.TZ2.6a:
Draw the repeating unit of polyphenylethene.
- 20N.1.sl.TZ0.25: Which molecule will decolorize bromine water in the dark? A. cyclohexane B. hexane C. ...
-
20N.2.hl.TZ0.2e:
Compound A and B are isomers. Draw two other structural isomers with the formula .
- 20N.1.sl.TZ0.24: Which functional groups are present in this molecule? A. carbonyl, ether, nitrile B. ...
- 20N.1.sl.TZ0.27: Which mechanism does benzene most readily undergo? A. Nucleophilic substitution B. ...
-
18M.3.sl.TZ2.2b.i:
The above ball and stick model is a substituted pyridine molecule (made of carbon, hydrogen, nitrogen, bromine and chlorine atoms). All atoms are shown and represented according to their relative atomic size.
Label each ball in the diagram, excluding hydrogens, as a carbon, C, nitrogen, N, bromine, Br, or chlorine, Cl.
-
17M.2.hl.TZ2.2a.v:
Identify one organic functional group that can react with acidified K2Cr2O7(aq).
-
17M.2.hl.TZ2.7a.ii:
Identify the functional group that shows stretching at 1710 cm–1 in the infrared spectrum of this compound using section 26 of the data booklet and the 1H NMR.
-
17M.2.hl.TZ1.6c.i:
One possible product, X, of the reaction of ethane with chlorine has the following composition by mass:
carbon: 24.27%, hydrogen: 4.08%, chlorine: 71.65%
Determine the empirical formula of the product.
- 20N.3.sl.TZ0.9b: State a class of organic compounds found in gasoline.
-
19N.3.hl.TZ0.24b:
Describe a technique for the detection of steroids in blood and urine.
- 20N.1.sl.TZ0.26: What is the IUPAC name of this molecule? A. 1,1,2,4-tetramethylpent-1-ene B. ...
-
22M.2.sl.TZ1.3c(i):
State the name of Compound A, applying International Union of Pure and Applied Chemistry (IUPAC) rules.
- 22M.2.sl.TZ1.3d(ii): Deduce the structural formula of the repeating unit of the polymer formed from this alkene.
-
19M.2.sl.TZ2.1c(i):
Product A contains a carbon–carbon double bond. State the type of reactions that compounds containing this bond are likely to undergo.
-
19M.2.hl.TZ1.2f(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
-
17M.3.hl.TZ2.20a.iii:
Suggest two absorbances, other than the absorbances due to the ring structure and C–H bonds, that would be present in the infrared (IR) spectrum of aspirin.
-
17M.2.sl.TZ1.5c.i:
One possible product, X, of the reaction of ethane with chlorine has the following composition by mass:
carbon: 24.27%, hydrogen: 4.08%, chlorine: 71.65%
Determine the empirical formula of the product.
-
20N.2.sl.TZ0.1d(v):
Ethoxyethane (diethyl ether) can be used as a solvent for this conversion. Draw the structural formula of ethoxyethane
-
19N.2.sl.TZ0.3d(i):
State the reagents and conditions for the conversion of the compound C2H6O, produced in (b), into C2H4O.
-
19M.2.hl.TZ1.1d(ii):
1,4-dimethylbenzene reacts as a substituted alkane. Draw the structures of the two products of the overall reaction when one molecule of bromine reacts with one molecule of 1,4-dimethylbenzene.
-
19N.3.hl.TZ0.24c:
Explain how redox chemistry is used to measure the ethanol concentration in a breathalyser.
- 21M.1.sl.TZ1.25: What is the name of this compound, applying IUPAC rules? A. 4-methylhex-2-ene B. ...
- 21M.1.sl.TZ1.26: What is formed in a propagation step of the substitution reaction between bromine and...
-
21M.1.sl.TZ1.27:
Which monomer would produce the polymer shown?
A.
B.
C.
D.
-
18M.3.sl.TZ2.2b.iii:
Pyridine, like benzene, is an aromatic compound.
Outline what is meant by an aromatic compound.
- 20N.3.hl.TZ0.11b: State a class of organic compounds found in gasoline.
-
20N.3.hl.TZ0.11e(iii):
Suggest a wavenumber absorbed by methane gas.
- 21M.2.hl.TZ1.5a(ii): State the molecular formula of the next member of the homologous series to which ethene belongs.
- 21M.2.hl.TZ1.5d: A white solid was formed when ethene was subjected to high pressure. Deduce the type of reaction...
- 21M.2.hl.TZ1.5a(i): State the class of compound to which ethene belongs.
- 21M.2.hl.TZ1.5c: Suggest two possible products of the incomplete combustion of ethene that would not be formed by...
- 21M.2.hl.TZ1.5e(iii): 2-bromopropane can be converted directly to propan-2-ol. Identify the reagent required.
-
21M.1.sl.TZ2.26:
Which monomer forms the polymer shown?
A.
B.
C.
D.
- 21M.1.sl.TZ2.24: Which is in the same homologous series as CH3OCH3? A. CH3COCH3 B. CH3COOCH3 C. ...
-
21M.1.sl.TZ2.28:
Which spectra would show the difference between propan-2-ol, CH3CH(OH)CH3, and propanal, CH3CH2CHO?
I. mass
II. infrared
III. 1H NMRA. I and II only
B. I and III only
C. II and III only
D. I, II and III
-
18M.2.sl.TZ2.7a:
The Kekulé structure of benzene suggests it should readily undergo addition reactions.
Discuss two pieces of evidence, one physical and one chemical, which suggest this is not the structure of benzene.
-
19M.2.sl.TZ1.2b(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
-
19M.2.hl.TZ2.1d(i):
Suggest the reagents and conditions required to ensure a good yield of product B.
Reagents:
Conditions:
-
20N.2.sl.TZ0.1d(iii):
Write the equation for the reaction of chloroethane with a dilute aqueous solution of sodium hydroxide.
-
21M.1.hl.TZ2.37:
Which can be reduced to a secondary alcohol?
A. C2H5COOH
B. CH3CH2OCH3
C. (CH3)2CHCHO
D. CH3COC2H5
-
17M.2.sl.TZ1.5b:
Formulate equations for the two propagation steps and one termination step in the formation of chloroethane from ethane.
-
17N.2.sl.TZ0.6a.ii:
State the observation expected for each reaction giving your reasons.
- 21M.2.sl.TZ1.5a(i): State the class of compound to which ethene belongs.
- 21M.2.sl.TZ1.5d: A white solid was formed when ethene was subjected to high pressure. Deduce the type of reaction...
- 21M.2.sl.TZ1.5c: Suggest two possible products of the incomplete combustion of ethene that would not be formed by...
- 21M.2.sl.TZ1.5a(ii): State the molecular formula of the next member of the homologous series to which ethene belongs.
- 20N.2.sl.TZ0.4c: Discuss, referring to intermolecular forces present, the relative volatility of propanone and...
-
21M.2.sl.TZ2.4a:
Several compounds can be synthesized from but-2-ene. Draw the structure of the final product for each of the following chemical reactions.
-
21M.2.sl.TZ2.4c:
Write the equation and name the organic product when ethanol reacts with methanoic acid.
-
21M.2.sl.TZ2.4d:
Oxidation of ethanol with potassium dichromate, K2Cr2O7, can form two different organic products. Determine the names of the organic products and the methods used to isolate them.
-
20N.2.sl.TZ0.2c:
Compound A and B are isomers. Draw two other structural isomers with the formula .
-
21M.2.hl.TZ2.4a:
Several compounds can be synthesized from but-2-ene. Draw the structure of the final product for each of the following chemical reactions.
-
21M.2.hl.TZ2.5c:
Write the equation and name the organic product when ethanol reacts with methanoic acid.
-
21M.2.hl.TZ2.5b:
Oxidation of ethanol with potassium dichromate, K2Cr2O7, can form two different organic products. Determine the names of the organic products and the methods used to isolate them.
-
17M.2.sl.TZ2.6a:
Using relevant equations, show the initiation and the propagation steps for this reaction.
-
20N.2.sl.TZ0.1d(iv):
Deduce the nucleophile for the reaction in d(iii).
-
20N.2.sl.TZ0.1d(i):
State the type of reaction occurring when ethane reacts with chlorine to produce chloroethane.
-
20N.2.hl.TZ0.1d(ii):
Predict, giving a reason, whether ethane or chloroethane is more reactive.
-
20N.2.sl.TZ0.1d(ii):
Predict, giving a reason, whether ethane or chloroethane is more reactive.
-
20N.2.hl.TZ0.1d(iv):
Ethoxyethane (diethyl ether) can be used as a solvent for this conversion.
Draw the structural formula of ethoxyethane -
20N.2.hl.TZ0.2d:
The IR spectrum of one of the compounds is shown:
COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.
Deduce, giving a reason, the compound producing this spectrum.
-
19M.2.hl.TZ1.1b:
Draw the structure of one other isomer of xylene which retains the benzene ring.
- 20N.2.hl.TZ0.4c: Discuss, referring to intermolecular forces present, the relative volatility of propanone and...
-
20N.2.sl.TZ0.2b:
The IR spectrum of one of the compounds is shown:
COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.
Deduce, giving a reason, the compound producing this spectrum. -
20N.3.sl.TZ0.9f(iii):
Suggest a wavenumber absorbed by methane gas.
- 20N.3.sl.TZ0.14a(i): Name two functional groups that both zanamivir and oseltamivir contain.
-
22M.2.hl.TZ2.8c:
Describe a test and the expected result to indicate the presence of carbon–carbon double bonds.
-
22M.2.hl.TZ2.8d(iv):
Suggest two differences in the 1H NMR of but-2-ene and the organic product from (d)(ii).
-
22M.2.hl.TZ2.8e(ii):
Deduce the splitting pattern in the 1H NMR spectrum for 1-bromopropane.
-
19M.2.hl.TZ2.1c(ii):
Determine the enthalpy change for the reaction, in kJ, to produce A using section 11 of the data booklet.
- 22M.2.sl.TZ2.4b: State two features showing that propane and butane are members of the same homologous series.
-
22M.2.sl.TZ2.4c:
Describe a test and the expected result to indicate the presence of carbon–carbon double bonds.
- 22M.2.sl.TZ2.4d(i): Draw the full structural formula of but-2-ene.
-
22M.2.sl.TZ2.4d(iv):
Suggest two differences in the 1H NMR of but-2-ene and the organic product from (d)(ii).
-
21M.1.sl.TZ2.27:
Which is a propagation step in the free-radical substitution mechanism of ethane with chlorine?
A. C2 → 2 •C
B. •C2H5 + C2 → C2H5C + •C
C. •C2H5 + •C → C2H5C
D. C2H6 + •C → C2H5C + •H
-
17M.2.hl.TZ1.6c.ii:
The mass and 1H NMR spectra of product X are shown below. Deduce, giving your reasons, its structural formula and hence the name of the compound.
-
18M.2.sl.TZ1.3c:
One possible Lewis structure for benzene is shown.
State one piece of physical evidence that this structure is incorrect.
- 22M.2.hl.TZ1.5d(i): Identify the type of reaction.
-
17M.2.sl.TZ1.5c.ii:
The mass and 1HNMR spectra of product X are shown below. Deduce, giving your reasons, its structural formula and hence the name of the compound.
- 21M.1.sl.TZ1.24: Which series is in order of increasing boiling point? A. CH2CH2CH3OH CH3COCH3 ...
-
20N.1.hl.TZ0.34:
Which molecule can be oxidized to a carboxylic acid by acidified potassium dichromate(VI)?
A. Propan-1-ol
B. Propan-2-ol
C. 2-methylpropan-2-ol
D. Propanone
-
22M.1.sl.TZ2.22:
Which combination best describes what is happening to chloromethane, CH3Cl, in the equation below?
CH3Cl (g) + H2 (g) CH4 (g) + HCl (g)
A. Oxidation and addition
B. Oxidation and substitution
C. Reduction and addition
D. Reduction and substitution
-
22M.1.sl.TZ2.26:
Which is a homologous series?
A. C2H4, C3H5, C4H6
B. C2H2, C3H4, C4H6
C. C2H2, C2H4, C2H6
D. C2H2, C4H4, C6H6
- 21N.1.sl.TZ0.25: What is the name of this substance using IUPAC rules? A. 2-ethyl-1-methylbutan-1-ol B. ...
- 21N.2.sl.TZ0.4a(ii): Outline the role of the hydroxide ion in this reaction.
- 21N.2.hl.TZ0.10b(ii): State the type of reaction which occurs between but-1-ene and hydrogen iodide at room temperature.
- 21N.2.sl.TZ0.7b: Formulate equations for the two propagation steps and one termination step in the formation of...
- 957236: This is an example question for the example test. You can delete this question.
Sub sections and their related questions
10.1 Fundamentals of organic chemistry
- 16N.1.sl.TZ0.23: The structure of a drug used to treat symptoms of Alzheimer’s disease is shown below. Which...
-
16N.1.sl.TZ0.24:
Which alcohols are oxidized by acidified potassium dichromate(VI) solution when heated?
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
- 16N.2.sl.TZ0.1b: Determine the average oxidation state of carbon in ethene and in...
- 16N.2.sl.TZ0.5a: Draw the full structural formulas of propane and propene.
-
16N.3.sl.TZ0.9b:
The structures of two molecules, X and Y, are shown below.
(i) Justify why both these molecules are carbohydrates.
(ii) Distinguish between these molecules in terms of their functional groups.
- 16N.3.sl.TZ0.10a: State the IUPAC name for leucine.
-
16N.3.sl.TZ0.20a:
Compare and contrast the functional groups present in methadone and diamorphine (heroin), giving their names. Use section 37 of the data booklet.
- 17M.1.sl.TZ1.24: What is the order of increasing boiling point? A. C4H10 < CH3COOH < CH3CH2CHO <...
-
17M.1.sl.TZ1.25:
What are the functional groups in the aspirin molecule?
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
- 17M.1.sl.TZ1.26: What is the name of the compound with this molecular structure applying IUPAC rules? A. ...
-
17M.1.sl.TZ1.27:
Which molecule has a tertiary nitrogen?
A. (CH3)2NH
B. (C2H5)4N+I−
C. C3H7N(CH3)2
D. C6H5NH2
- 17M.1.hl.TZ1.35: What is the major product of the reaction between 2-methylbut-2-ene and hydrogen bromide? A. ...
-
17M.2.sl.TZ1.5a:
Ethane, C2H6, reacts with chlorine in sunlight. State the type of this reaction and the name of the mechanism by which it occurs.
-
17M.2.sl.TZ1.5c.i:
One possible product, X, of the reaction of ethane with chlorine has the following composition by mass:
carbon: 24.27%, hydrogen: 4.08%, chlorine: 71.65%
Determine the empirical formula of the product.
-
17M.2.sl.TZ1.5c.ii:
The mass and 1HNMR spectra of product X are shown below. Deduce, giving your reasons, its structural formula and hence the name of the compound.
-
17M.2.sl.TZ1.5d:
Chloroethene, C2H3Cl, can undergo polymerization. Draw a section of the polymer with three repeating units.
-
17M.2.sl.TZ1.6a:
Discuss the physical evidence for the structure of benzene.
-
17M.2.sl.TZ1.6b:
State the typical reactions that benzene and cyclohexene undergo with bromine.
-
17M.2.hl.TZ1.6c.i:
One possible product, X, of the reaction of ethane with chlorine has the following composition by mass:
carbon: 24.27%, hydrogen: 4.08%, chlorine: 71.65%
Determine the empirical formula of the product.
-
17M.2.hl.TZ1.6c.ii:
The mass and 1H NMR spectra of product X are shown below. Deduce, giving your reasons, its structural formula and hence the name of the compound.
-
17M.2.hl.TZ1.7c:
State the reagents used to convert benzene to nitrobenzene and the formula of the electrophile formed.
-
17M.3.sl.TZ1.10b.i:
Describe the difference in their structures.
-
17M.3.sl.TZ1.10b.ii:
Explain why the difference in their structures affects their melting points.
-
17M.3.sl.TZ1.15b:
Deduce the formula of the biodiesel formed when the vegetable oil shown is reacted with the reagents in (a).
- 17M.1.sl.TZ2.24: Which functional group is present in paracetamol? A. Carboxyl B. Amino C. ...
-
17M.1.sl.TZ2.27:
Which compound contains a secondary carbon atom?
A. CH3CH(Cl)CH(CH3)2
B. (CH3)2CHCH2Cl
C. (CH3)3CCl
D. CH3CH2Cl
- 17M.1.hl.TZ2.36: Which compounds can be reduced? I. C2H4II. CH3COOHIII. CH3CHO A. I and II...
-
17M.1.hl.TZ2.37:
In which order should the reagents be used to convert benzene into phenylamine (aniline)?
-
17M.2.sl.TZ2.6a:
Using relevant equations, show the initiation and the propagation steps for this reaction.
-
17M.2.sl.TZ2.6b:
Bromine was added to hexane, hex-1-ene and benzene. Identify the compound(s) which will react with bromine in a well-lit laboratory.
-
17M.2.hl.TZ2.2a.v:
Identify one organic functional group that can react with acidified K2Cr2O7(aq).
-
17M.2.hl.TZ2.6b:
The overall equation for monochlorination of methane is:
CH4(g) + Cl2(g) → CH3Cl(g) + HCl(g)
Calculate the standard enthalpy change for the reaction, ΔH θ, using section 12 of the data booklet.
-
17M.2.hl.TZ2.7a.ii:
Identify the functional group that shows stretching at 1710 cm–1 in the infrared spectrum of this compound using section 26 of the data booklet and the 1H NMR.
-
17M.2.hl.TZ2.7a.iii:
Suggest the structural formula of this compound.
-
17M.2.hl.TZ2.7b.i:
Bromine was added to hexane, hex-1-ene and benzene. Identify the compound(s) which will react with bromine in a well-lit laboratory.
-
17M.2.hl.TZ2.7c.i:
State the reagents and the name of the mechanism for the nitration of benzene.
-
17M.2.hl.TZ2.9b.i:
Hydrogenation of propene produces propane. Calculate the standard entropy change, ΔS θ, for the hydrogenation of propene.
-
17M.3.sl.TZ2.10a:
Identify the functional groups which are present in only one structure of glucose.
-
17M.3.hl.TZ2.3c.iii:
Subsequent steps proceed under differing conditions, forming the dendrimer polymer with the following repeating unit.
State the name of one functional group in this repeating unit.
-
17M.3.hl.TZ2.20a.iii:
Suggest two absorbances, other than the absorbances due to the ring structure and C–H bonds, that would be present in the infrared (IR) spectrum of aspirin.
- 17N.1.sl.TZ0.26: What is the name of this compound, using IUPAC rules? A. 3-methylbutan-3-ol B....
- 17N.1.sl.TZ0.28: How many structural isomers of C6H14 exist? A. 4 B. 5 C. 6 D. 7
- 17N.1.hl.TZ0.38: Which functional group is responsible for the pKb of 4.1 in this compound? A. Amido B....
- 18M.1.hl.TZ1.34: Which is a secondary alcohol?
-
18M.2.hl.TZ1.3d:
One possible Lewis structure for benzene is shown.
State one piece of physical evidence that this structure is incorrect.
-
18M.2.hl.TZ1.7c.iii:
Deduce the name of the class of compound formed when the product of (c)(i) reacts with butanoic acid.
-
18M.2.hl.TZ2.9a.i:
Deduce the structural formulas of the two possible isomers.
- 18M.1.sl.TZ1.24: What are possible names of a molecule with molecular formula C4H10O? I. ...
-
18M.2.sl.TZ1.3c:
One possible Lewis structure for benzene is shown.
State one piece of physical evidence that this structure is incorrect.
- 18M.1.sl.TZ2.24: Which compounds belong to the same homologous series? A. CHCCH2CH3, CHCCH2CH2CH3 B. ...
- 18M.1.sl.TZ2.25: What is the name of this compound, using IUPAC rules? A. 1,1-dimethylpropanoic acid B. ...
- 18M.1.sl.TZ2.27: Which are structural isomers? I. CH3CH2OH and CH3OCH3 II. HOCH2CH3 and...
-
18M.2.sl.TZ2.7a:
The Kekulé structure of benzene suggests it should readily undergo addition reactions.
Discuss two pieces of evidence, one physical and one chemical, which suggest this is not the structure of benzene.
-
18M.3.sl.TZ2.2a:
Describe two differences, other than the number of atoms, between the models of ethane and ethene constructed from the kit shown.
-
18M.3.sl.TZ2.2b.i:
The above ball and stick model is a substituted pyridine molecule (made of carbon, hydrogen, nitrogen, bromine and chlorine atoms). All atoms are shown and represented according to their relative atomic size.
Label each ball in the diagram, excluding hydrogens, as a carbon, C, nitrogen, N, bromine, Br, or chlorine, Cl.
-
18M.3.sl.TZ2.2b.iii:
Pyridine, like benzene, is an aromatic compound.
Outline what is meant by an aromatic compound.
- 18N.1.sl.TZ0.26: Which is correct for benzene? A. It readily undergoes addition reactions and decolourises...
-
18N.1.sl.TZ0.25:
What is the order of increasing boiling point for the isomers of C5H12?
A. CH3CH2CH2CH2CH3 < CH3CH(CH3)CH2CH3 < CH3C(CH3)3
B. CH3C(CH3)3 < CH3CH(CH3)CH2CH3 < CH3CH2CH2CH2CH3
C. CH3C(CH3)3 < CH3CH2CH2CH2CH3 < CH3CH(CH3)CH2CH3
D. CH3CH(CH3)CH2CH3 < CH3C(CH3)3 < CH3CH2CH2CH2CH3
-
18N.2.sl.TZ0.2a:
Draw the structural formula of propan-2-ol.
- 18N.2.sl.TZ0.2c: Classify propan-2-ol as a primary, secondary or tertiary alcohol, giving a reason.
-
18N.2.hl.TZ0.2d:
The compound could not be oxidized using acidifi ed potassium dichromate(VI).
Deduce the structural formula of the compound.
-
18N.2.hl.TZ0.8b.i:
Draw two structural isomers of methyloxirane.
-
19M.2.hl.TZ1.1b:
Draw the structure of one other isomer of xylene which retains the benzene ring.
-
19M.2.hl.TZ1.2c:
Outline one piece of physical evidence for the structure of the benzene ring.
-
19M.2.hl.TZ2.1c(ii):
Determine the enthalpy change for the reaction, in kJ, to produce A using section 11 of the data booklet.
- 19M.1.hl.TZ1.32: What is the IUPAC name of the following molecule? A. 2-bromo-3-ethylbutane B....
-
19M.1.hl.TZ2.32:
Which compound has the lowest boiling point?
A. CH3CH2CH2CH2CH2CH3
B. CH3CH2CH2CH2CH3
C. CH3CH(CH3)CH2CH3
D. CH3C(CH3)2CH3
- 19M.1.hl.TZ2.34: What is the name of this compound using IUPAC rules? A. 2,3-diethylbutane B....
-
19M.2.sl.TZ1.1b:
Draw the structure of one other isomer of xylene which retains the benzene ring.
-
19M.2.sl.TZ2.1c(ii):
State the name of product B, applying IUPAC rules.
-
19M.3.sl.TZ1.5a:
State the name of the functional group which allows the molecule to be responsive to applied electric fields.
- 19M.1.sl.TZ1.24: Which functional group is surrounded in the molecule? A. hydroxyl B. carboxyl C. carbonyl...
- 19M.1.sl.TZ1.25: What is the IUPAC name of the following molecule? A. 2-bromo-3-ethylbutane B....
-
19M.1.sl.TZ2.24:
Which compound has the lowest boiling point?
A. CH3CH2CH2CH2CH2CH3
B. CH3CH2CH2CH2CH3
C. CH3CH(CH3)CH2CH3
D. CH3C(CH3)2CH3
- 19N.2.hl.TZ0.3a(ii): State the IUPAC name of the major product.
-
19N.2.hl.TZ0.3d(ii):
Explain why the compound C3H8O, produced in (a)(iv), has a higher boiling point than compound C3H6O, produced in d(i).
-
19N.2.hl.TZ0.3d(iii):
Explain why the 1H NMR spectrum of C3H6O, produced in (d)(i), shows only one signal.
- 19N.2.hl.TZ0.3e: Propene is often polymerized. Draw a section of the resulting polymer, showing two repeating units.
-
19N.3.sl.TZ0.7a:
Draw the structure of the dipeptide Asp–Phe using section 33 of the data booklet.
- 19N.3.sl.TZ0.9d(i): State one similarity and one difference in composition between phospholipids and...
- 19N.3.sl.TZ0.10a: State the name of one functional group common to all three vitamins shown in section 35 of the...
- 19N.3.sl.TZ0.12b(i): Reforming reactions are used to increase the octane number of a hydrocarbon fuel. Suggest the...
- 19N.3.sl.TZ0.12b(ii): The 1H NMR spectrum of one of the products has four signals. The integration trace shows a ratio...
-
19N.3.hl.TZ0.24a:
Infrared (IR) spectroscopy is used to identify functional groups in organic compounds.
Deduce the wavenumber, in cm−1, of an absorption peak found in the IR spectrum of testosterone but not in that of cholesterol.
-
19N.3.hl.TZ0.24b:
Describe a technique for the detection of steroids in blood and urine.
-
19N.3.hl.TZ0.24c:
Explain how redox chemistry is used to measure the ethanol concentration in a breathalyser.
- 19N.1.sl.TZ0.25: Which compound is not in the same homologous series as the others? A. C5H12 B. C6H12 C. ...
- 19N.3.sl.TZ0.9b: State one impact on health of the increase in LDL cholesterol concentration in blood.
- 19N.3.sl.TZ0.10c: Explain why maltose, C12H22O11, is soluble in water.
- 19N.3.sl.TZ0.15a: State the names of two functional groups present in all three molecules, using section 37 of the...
-
19N.2.sl.TZ0.3d(ii):
Explain why the compound C2H6O, produced in (b), has a higher boiling point than compound C2H4O, produced in d(i).
- 19N.2.sl.TZ0.3e: Ethene is often polymerized. Draw a section of the resulting polymer, showing two repeating units.
-
19N.3.hl.TZ0.10a:
Draw the structure of the dipeptide Asp–Phe using section 33 of the data booklet.
- 19N.3.hl.TZ0.12c: State one similarity and one difference in composition between phospholipids and...
- 19N.3.hl.TZ0.14c: Vitamins are organic compounds essential in small amounts. State the name of one functional...
- 19N.3.hl.TZ0.15c: Explain why maltose, C12H22O11, is soluble in water.
- 20N.1.sl.TZ0.24: Which functional groups are present in this molecule? A. carbonyl, ether, nitrile B. ...
- 20N.1.sl.TZ0.26: What is the IUPAC name of this molecule? A. 1,1,2,4-tetramethylpent-1-ene B. ...
-
20N.1.hl.TZ0.40:
Which compound with the molecular formula has this high resolution ?
From: libretexts.org. Courtesy of Chris Schaller, Professor (Chemistry)
at College of Saint Benedict/Saint John’s University.A. but-3-en-2-ol,
B. butanal,
C. butanone,
D. but-3-en-1-ol,
-
20N.2.sl.TZ0.1d(v):
Ethoxyethane (diethyl ether) can be used as a solvent for this conversion. Draw the structural formula of ethoxyethane
-
20N.2.sl.TZ0.2b:
The IR spectrum of one of the compounds is shown:
COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.
Deduce, giving a reason, the compound producing this spectrum. -
20N.2.sl.TZ0.2c:
Compound A and B are isomers. Draw two other structural isomers with the formula .
- 20N.2.sl.TZ0.4c: Discuss, referring to intermolecular forces present, the relative volatility of propanone and...
-
20N.2.hl.TZ0.1d(iv):
Ethoxyethane (diethyl ether) can be used as a solvent for this conversion.
Draw the structural formula of ethoxyethane -
20N.2.hl.TZ0.2d:
The IR spectrum of one of the compounds is shown:
COBLENTZ SOCIETY. Collection © 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.
Deduce, giving a reason, the compound producing this spectrum.
-
20N.2.hl.TZ0.2e:
Compound A and B are isomers. Draw two other structural isomers with the formula .
- 20N.2.hl.TZ0.4c: Discuss, referring to intermolecular forces present, the relative volatility of propanone and...
- 20N.3.sl.TZ0.9b: State a class of organic compounds found in gasoline.
-
20N.3.sl.TZ0.9f(iii):
Suggest a wavenumber absorbed by methane gas.
- 20N.3.sl.TZ0.14a(i): Name two functional groups that both zanamivir and oseltamivir contain.
- 20N.3.hl.TZ0.11b: State a class of organic compounds found in gasoline.
-
20N.3.hl.TZ0.11e(iii):
Suggest a wavenumber absorbed by methane gas.
- 21M.1.sl.TZ1.24: Which series is in order of increasing boiling point? A. CH2CH2CH3OH CH3COCH3 ...
- 21M.1.sl.TZ1.25: What is the name of this compound, applying IUPAC rules? A. 4-methylhex-2-ene B. ...
- 21M.1.sl.TZ2.24: Which is in the same homologous series as CH3OCH3? A. CH3COCH3 B. CH3COOCH3 C. ...
- 21M.1.sl.TZ2.25: What is the IUPAC name of the molecule shown? A. 2,4-dimethylhexane B. ...
-
21M.1.sl.TZ2.28:
Which spectra would show the difference between propan-2-ol, CH3CH(OH)CH3, and propanal, CH3CH2CHO?
I. mass
II. infrared
III. 1H NMRA. I and II only
B. I and III only
C. II and III only
D. I, II and III
- 21M.2.sl.TZ1.5a(i): State the class of compound to which ethene belongs.
- 21M.2.sl.TZ1.5a(ii): State the molecular formula of the next member of the homologous series to which ethene belongs.
- 21M.2.hl.TZ1.5a(i): State the class of compound to which ethene belongs.
- 21M.2.hl.TZ1.5a(ii): State the molecular formula of the next member of the homologous series to which ethene belongs.
-
21M.2.sl.TZ2.4c:
Write the equation and name the organic product when ethanol reacts with methanoic acid.
- 21N.1.sl.TZ0.25: What is the name of this substance using IUPAC rules? A. 2-ethyl-1-methylbutan-1-ol B. ...
- 21N.1.sl.TZ0.26: Which pair of compounds are structural isomers? A. Propane and propene B. Propanal and...
- 21N.1.sl.TZ0.27: What is the general formula of alkynes? A. CnH2n+2 B. CnH2n C. CnH2n−2 D. CnHn
- 22M.1.sl.TZ1.24: Which functional groups are present in serine? A. nitro, carbonyl and carboxyl B. amino,...
- 22M.1.sl.TZ1.25: Which compounds are members of the same homologous series? A. propanal, propanone, propanoic...
- 22M.1.sl.TZ2.24: How many dichlorinated butane isomers can be formed by the halogenation of CH3CH2CH2CH3 with...
-
22M.1.sl.TZ2.26:
Which is a homologous series?
A. C2H4, C3H5, C4H6
B. C2H2, C3H4, C4H6
C. C2H2, C2H4, C2H6
D. C2H2, C4H4, C6H6
-
22M.2.sl.TZ1.3c(i):
State the name of Compound A, applying International Union of Pure and Applied Chemistry (IUPAC) rules.
- 22M.2.sl.TZ1.3d(i): Draw the structural formula of the alkene required.
-
22M.2.hl.TZ1.5a(i):
State the name of Compound B, applying International Union of Pure and Applied Chemistry (IUPAC) rules.
- 22M.2.hl.TZ1.5b(i): Draw the structural formula of the alkene required.
- 22M.2.sl.TZ2.4b: State two features showing that propane and butane are members of the same homologous series.
- 22M.2.sl.TZ2.4d(i): Draw the full structural formula of but-2-ene.
-
22M.2.sl.TZ2.4d(iv):
Suggest two differences in the 1H NMR of but-2-ene and the organic product from (d)(ii).
- 22M.2.hl.TZ2.8b: State two features showing that propane and butane are members of the same homologous series.
-
22M.2.hl.TZ2.8d(iv):
Suggest two differences in the 1H NMR of but-2-ene and the organic product from (d)(ii).
-
22M.2.hl.TZ2.8e(ii):
Deduce the splitting pattern in the 1H NMR spectrum for 1-bromopropane.
- 957236: This is an example question for the example test. You can delete this question.
10.2 Functional group chemistry
-
16N.1.sl.TZ0.25:
Which monomer is used to form the polymer with the following repeating unit?
A. CH3CH=CHCH3
B. CH3CH2CH=CH2
C. CH3CH2CH2CH3
D. (CH3)2C=CH2
- 16N.1.sl.TZ0.26: Which type of reaction occurs when methanol and propanoic acid react together in the presence of...
-
16N.2.sl.TZ0.1d:
Ethane-1,2-diol can be oxidized first to ethanedioic acid, (COOH)2, and then to carbon dioxide and water. Suggest the reagents to oxidize ethane-1,2-diol.
-
16N.2.sl.TZ0.5b:
Both propane and propene react with bromine.
(i) State an equation and the condition required for the reaction of 1 mol of propane with 1 mol of bromine.
(ii) State an equation for the reaction of 1 mol of propene with 1 mol of bromine.
(iii) State the type of each reaction with bromine.
Propane:
Propene:
- 16N.3.sl.TZ0.2b: In trial 3, the students noticed that after heating, the crucible had turned black on the...
- 16N.3.sl.TZ0.17b: Oseltamivir does not possess the carboxyl group needed for activity until it is chemically...
- 17M.1.hl.TZ1.35: What is the major product of the reaction between 2-methylbut-2-ene and hydrogen bromide? A. ...
-
17M.2.sl.TZ1.5a:
Ethane, C2H6, reacts with chlorine in sunlight. State the type of this reaction and the name of the mechanism by which it occurs.
-
17M.2.sl.TZ1.5b:
Formulate equations for the two propagation steps and one termination step in the formation of chloroethane from ethane.
-
17M.2.sl.TZ1.5d:
Chloroethene, C2H3Cl, can undergo polymerization. Draw a section of the polymer with three repeating units.
-
17M.2.sl.TZ1.6a:
Discuss the physical evidence for the structure of benzene.
-
17M.2.sl.TZ1.6b:
State the typical reactions that benzene and cyclohexene undergo with bromine.
-
17M.3.hl.TZ1.9a:
Deduce the repeating unit of the polymer and the other product of the reaction.
- 17M.1.sl.TZ2.25: Which describes the reaction between a halogen and ethane?
- 17M.1.sl.TZ2.26: Which conditions are used to convert ethanol to ethanal? A. Excess oxidizing agent and...
-
17M.2.sl.TZ2.6a:
Using relevant equations, show the initiation and the propagation steps for this reaction.
-
17M.2.sl.TZ2.6b:
Bromine was added to hexane, hex-1-ene and benzene. Identify the compound(s) which will react with bromine in a well-lit laboratory.
-
17M.2.sl.TZ2.6c:
Polyvinyl chloride (PVC) is a polymer with the following structure.
State the structural formula for the monomer of PVC.
-
17M.2.hl.TZ2.2a.v:
Identify one organic functional group that can react with acidified K2Cr2O7(aq).
-
17M.2.hl.TZ2.6b:
The overall equation for monochlorination of methane is:
CH4(g) + Cl2(g) → CH3Cl(g) + HCl(g)
Calculate the standard enthalpy change for the reaction, ΔH θ, using section 12 of the data booklet.
-
17M.2.hl.TZ2.7b.i:
Bromine was added to hexane, hex-1-ene and benzene. Identify the compound(s) which will react with bromine in a well-lit laboratory.
-
17M.2.hl.TZ2.7b.ii:
Deduce the structural formula of the main organic product when hex-1-ene reacts with hydrogen bromide.
-
17M.3.hl.TZ2.3c.ii:
Suggest, giving one reason, whether this is an addition or condensation reaction.
- 17N.1.sl.TZ0.24: What is the major product of the reaction between HCl and but-2-ene? A. 1,2-dichlorobutane B....
-
17N.1.sl.TZ0.25:
Which compound can be oxidized when heated with an acidified solution of potassium dichromate(VI)?
A. CH3C(O)CH2CH3
B. CH3CH2CH(OH)CH3
C. (CH3)3COH
D. CH3(CH2)2COOH
- 17N.1.sl.TZ0.27: Which type of reaction occurs between an alcohol and a carboxylic acid? A. Addition B....
-
17N.2.sl.TZ0.6a.i:
Deduce the type of chemical reaction and the reagents used to distinguish between these compounds.
-
17N.2.sl.TZ0.6a.ii:
State the observation expected for each reaction giving your reasons.
-
17N.2.sl.TZ0.6b:
Explain, with the help of equations, the mechanism of the free-radical substitution reaction of ethane with bromine in presence of sunlight.
- 17N.3.sl.TZ0.8b.i: State the type of reaction occurring during the titration.
- 18M.1.hl.TZ1.33: Which monomer could create this polymer? A. But-2-ene B. But-1-ene C. ...
- 18M.1.hl.TZ1.40: Which would be the most effective method to distinguish between liquid propan-1-ol and...
-
18M.2.hl.TZ1.3a.i:
Ethyne, like ethene, undergoes hydrogenation to form ethane. State the conditions required.
-
18M.2.hl.TZ1.3a.ii:
Outline the formation of polyethene from ethene by drawing three repeating units of the polymer.
-
18M.2.hl.TZ1.3b:
Ethyne reacts with chlorine in a similar way to ethene. Formulate equations for the following reactions.
-
18M.2.hl.TZ1.7c.i:
State the organic product of the reaction between 1-chlorobutane, CH3CH2CH2CH2Cl, and aqueous sodium hydroxide.
- 18M.1.hl.TZ2.35: Which is the correct combination of substitution reaction mechanisms?
- 18M.1.sl.TZ1.25: What is the product of the reaction between hex-3-ene and steam? A. Hexan-1-ol B. ...
- 18M.1.sl.TZ1.26: Which of these reactions proceeds by a free radical mechanism in the presence of UV light? A. ...
-
18M.1.sl.TZ1.27:
Which compound could be formed when CH3CH2CH2OH is heated with acidified potassium dichromate(VI)?
I. CH3CH2CHO
II. CH3CH2COOH
III. CH3COCH3
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
-
18M.2.sl.TZ1.3a.i:
Ethyne, like ethene, undergoes hydrogenation to form ethane. State the conditions required.
-
18M.2.sl.TZ1.3a.ii:
Outline the formation of polyethene from ethene by drawing three repeating units of the polymer.
-
18M.2.sl.TZ1.3d:
State the characteristic reaction mechanism of benzene.
- 18M.1.sl.TZ2.26: What is the mechanism for the reaction of propene with iodine in the dark? A. electrophilic...
-
18M.2.sl.TZ2.7b.i:
Formulate the ionic equation for the oxidation of propan-1-ol to the corresponding aldehyde by acidified dichromate(VI) ions. Use section 24 of the data booklet.
-
18M.2.sl.TZ2.7b.ii:
The aldehyde can be further oxidized to a carboxylic acid.
Outline how the experimental procedures differ for the synthesis of the aldehyde and the carboxylic acid.
-
18N.1.sl.TZ0.24:
Which compounds cause the colour of acidified potassium manganate(VII) solution to change from purple to colourless?
I. CH3CH2CH2CH2OH
II. (CH3)3CCH2OH
III. CH3CH2CH(OH)CH3
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
-
18N.1.sl.TZ0.27:
Which compounds react to form CH3CH2CH2COOCH(CH3)2?
A. propanoic acid and propan-2-ol
B. propanoic acid and butan-2-ol
C. butanoic acid and propan-1-ol
D. butanoic acid and propan-2-ol
-
18N.2.sl.TZ0.2d.i:
State a suitable oxidizing agent for the oxidation of propan-2-ol in an acidified aqueous solution.
-
18N.2.sl.TZ0.2d.iii:
Deduce the product of the oxidation of propan-2-ol with the oxidizing agent in (d)(i).
- 18N.2.sl.TZ0.7a: Identify the type of reaction in step 1.
- 18N.2.hl.TZ0.9a: State a reason why most halogenoalkanes are more reactive than alkanes.
- 18N.2.hl.TZ0.9b: Classify 1-bromopropane as a primary, secondary or tertiary halogenoalkane, giving a reason.
-
19M.2.hl.TZ1.1d(i):
Identify the initiation step of the reaction and its conditions.
-
19M.2.hl.TZ1.1d(ii):
1,4-dimethylbenzene reacts as a substituted alkane. Draw the structures of the two products of the overall reaction when one molecule of bromine reacts with one molecule of 1,4-dimethylbenzene.
-
19M.2.hl.TZ1.2f(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
-
19M.2.hl.TZ2.1a:
Write an equation for the complete combustion of ethyne.
-
19M.2.hl.TZ2.1c(i):
State the name of product B, applying IUPAC rules.
-
19M.2.hl.TZ2.1d(i):
Suggest the reagents and conditions required to ensure a good yield of product B.
Reagents:
Conditions:
-
19M.2.hl.TZ2.6a:
Draw the repeating unit of polyphenylethene.
-
19M.1.hl.TZ1.34:
Which alcohol would produce a carboxylic acid when heated with acidified potassium dichromate(VI)?
A. propan-2-ol
B. butan-1-ol
C. 2-methylpropan-2-ol
D. pentan-3-ol
-
19M.1.hl.TZ2.33:
Methane reacts with chlorine in sunlight.
CH4 (g) + Cl2 (g) → CH3Cl (g) + HCl (g)
Which type of reaction occurs?
A. free-radical substitution
B. electrophilic substitution
C. nucleophilic substitution
D. electrophilic addition
-
19M.1.hl.TZ2.35:
What must be present on a nucleophile?
A. Negative charge
B. Lone pair of electrons
C. Positive charge
D. Symmetrical distribution of electrons
-
19M.2.sl.TZ1.1c(i):
Identify the initiation step of the reaction and its conditions.
-
19M.2.sl.TZ1.1c(ii):
1,4-dimethylbenzene reacts as a substituted alkane. Draw the structures of the two products of the overall reaction when one molecule of bromine reacts with one molecule of 1,4-dimethylbenzene.
-
19M.2.sl.TZ1.2b(ii):
Formulate the equation for the complete combustion of benzoic acid in oxygen using only integer coefficients.
-
19M.2.sl.TZ2.1a:
Write an equation for the complete combustion of ethyne.
-
19M.2.sl.TZ2.1c(i):
Product A contains a carbon–carbon double bond. State the type of reactions that compounds containing this bond are likely to undergo.
- 19M.1.sl.TZ1.26: What is the mechanism of the reaction between alkenes and halogens in the absence of light? A....
-
19M.1.sl.TZ1.27:
Which alcohol would produce a carboxylic acid when heated with acidified potassium dichromate(VI)?
A. propan-2-ol
B. butan-1-ol
C. 2-methylpropan-2-ol
D. pentan-3-ol
- 19M.1.sl.TZ2.25: Which of the following can be both formed from bromoethane and converted directly into...
-
19M.1.sl.TZ2.26:
Methane reacts with chlorine in sunlight.
CH4 (g) + Cl2 (g) → CH3Cl (g) + HCl (g)
Which type of reaction occurs?
A. free-radical substitution
B. electrophilic substitution
C. nucleophilic substitution
D. electrophilic addition
- 19N.2.hl.TZ0.3a(i): State the type of reaction.
-
19N.2.hl.TZ0.3c(i):
Write an equation for the complete combustion of the compound C3H8O formed in (a)(iv).
-
19N.2.hl.TZ0.3d(i):
State the reagents for the conversion of the compound C3H8O formed in (a)(iv) into C3H6O.
- 19N.2.hl.TZ0.3e: Propene is often polymerized. Draw a section of the resulting polymer, showing two repeating units.
-
19N.3.hl.TZ0.5a:
Draw the structure of the monomers of Kevlar® if the by-product of the condensation polymerization is hydrogen chloride.
- 19N.3.sl.TZ0.9d(i): State one similarity and one difference in composition between phospholipids and...
-
19N.3.sl.TZ0.14a:
Write the equation for the complete combustion of ethanol.
-
19N.3.hl.TZ0.24c:
Explain how redox chemistry is used to measure the ethanol concentration in a breathalyser.
- 19N.1.sl.TZ0.27: Which will react with a halogen by an electrophilic substitution mechanism?
- 19N.1.sl.TZ0.28: Which compound cannot undergo addition polymerization?
- 19N.3.sl.TZ0.9b: State one impact on health of the increase in LDL cholesterol concentration in blood.
- 19N.2.sl.TZ0.3a: State the type of reaction which converts ethene into C2H5Cl.
-
19N.2.sl.TZ0.3b:
Write an equation for the reaction of C2H5Cl with aqueous sodium hydroxide to produce a C2H6O compound, showing structural formulas.
-
19N.2.sl.TZ0.3c(i):
Write an equation for the complete combustion of the organic product in (b).
-
19N.2.sl.TZ0.3d(i):
State the reagents and conditions for the conversion of the compound C2H6O, produced in (b), into C2H4O.
- 19N.2.sl.TZ0.3e: Ethene is often polymerized. Draw a section of the resulting polymer, showing two repeating units.
- 19N.3.hl.TZ0.12c: State one similarity and one difference in composition between phospholipids and...
- 19N.1.sl.TZ0.26: What type of reaction occurs when C6H13Br becomes C6H13OH? A. Nucleophilic substitution B. ...
- 20N.1.sl.TZ0.25: Which molecule will decolorize bromine water in the dark? A. cyclohexane B. hexane C. ...
- 20N.1.sl.TZ0.27: Which mechanism does benzene most readily undergo? A. Nucleophilic substitution B. ...
-
20N.1.hl.TZ0.34:
Which molecule can be oxidized to a carboxylic acid by acidified potassium dichromate(VI)?
A. Propan-1-ol
B. Propan-2-ol
C. 2-methylpropan-2-ol
D. Propanone
-
20N.2.sl.TZ0.1d(i):
State the type of reaction occurring when ethane reacts with chlorine to produce chloroethane.
-
20N.2.sl.TZ0.1d(ii):
Predict, giving a reason, whether ethane or chloroethane is more reactive.
-
20N.2.sl.TZ0.1d(iii):
Write the equation for the reaction of chloroethane with a dilute aqueous solution of sodium hydroxide.
-
20N.2.sl.TZ0.1d(iv):
Deduce the nucleophile for the reaction in d(iii).
-
20N.2.hl.TZ0.1d(i):
State the type of reaction occurring when ethane reacts with chlorine to produce chloroethane.
-
20N.2.hl.TZ0.1d(ii):
Predict, giving a reason, whether ethane or chloroethane is more reactive.
- 21M.1.sl.TZ1.26: What is formed in a propagation step of the substitution reaction between bromine and...
-
21M.1.sl.TZ1.27:
Which monomer would produce the polymer shown?
A.
B.
C.
D.
-
21M.1.sl.TZ2.26:
Which monomer forms the polymer shown?
A.
B.
C.
D.
-
21M.1.sl.TZ2.27:
Which is a propagation step in the free-radical substitution mechanism of ethane with chlorine?
A. C2 → 2 •C
B. •C2H5 + C2 → C2H5C + •C
C. •C2H5 + •C → C2H5C
D. C2H6 + •C → C2H5C + •H
-
21M.1.hl.TZ2.37:
Which can be reduced to a secondary alcohol?
A. C2H5COOH
B. CH3CH2OCH3
C. (CH3)2CHCHO
D. CH3COC2H5
- 21M.2.sl.TZ1.5c: Suggest two possible products of the incomplete combustion of ethene that would not be formed by...
- 21M.2.sl.TZ1.5d: A white solid was formed when ethene was subjected to high pressure. Deduce the type of reaction...
- 21M.2.hl.TZ1.5c: Suggest two possible products of the incomplete combustion of ethene that would not be formed by...
- 21M.2.hl.TZ1.5d: A white solid was formed when ethene was subjected to high pressure. Deduce the type of reaction...
- 21M.2.hl.TZ1.5e(iii): 2-bromopropane can be converted directly to propan-2-ol. Identify the reagent required.
- 21M.2.hl.TZ1.5e(iv): Propan-2-ol can also be formed in one step from a compound containing a carbonyl group. State...
-
21M.2.sl.TZ2.4a:
Several compounds can be synthesized from but-2-ene. Draw the structure of the final product for each of the following chemical reactions.
-
21M.2.sl.TZ2.4d:
Oxidation of ethanol with potassium dichromate, K2Cr2O7, can form two different organic products. Determine the names of the organic products and the methods used to isolate them.
-
21M.2.hl.TZ2.4a:
Several compounds can be synthesized from but-2-ene. Draw the structure of the final product for each of the following chemical reactions.
-
21M.2.hl.TZ2.5b:
Oxidation of ethanol with potassium dichromate, K2Cr2O7, can form two different organic products. Determine the names of the organic products and the methods used to isolate them.
-
21M.2.hl.TZ2.5c:
Write the equation and name the organic product when ethanol reacts with methanoic acid.
- 21N.2.sl.TZ0.4a(i): Identify the type of reaction.
- 21N.2.sl.TZ0.4a(ii): Outline the role of the hydroxide ion in this reaction.
- 21N.2.sl.TZ0.7b: Formulate equations for the two propagation steps and one termination step in the formation of...
- 21N.2.hl.TZ0.10b(ii): State the type of reaction which occurs between but-1-ene and hydrogen iodide at room temperature.
-
22M.1.sl.TZ1.26:
Which reagents and conditions are best for converting propan-1-ol into propanoic acid?
A. Reflux with acidified potassium dichromate (VI)
B. Reflux with aqueous sodium hydroxide
C. Distil with acidified potassium dichromate (VI)
D. Distil with aqueous sodium hydroxide
- 22M.1.sl.TZ1.27: What is produced when chlorobutane is treated with aqueous sodium hydroxide solution? A. ...
-
22M.1.hl.TZ1.34:
Which reagents and conditions are best for converting propan-1-ol into propanoic acid?
A. Reflux with acidified potassium dichromate (VI)
B. Reflux with LiAlH4
C. Distil with acidified potassium dichromate (VI)
D. Distil with LiAlH4
-
22M.1.sl.TZ2.22:
Which combination best describes what is happening to chloromethane, CH3Cl, in the equation below?
CH3Cl (g) + H2 (g) CH4 (g) + HCl (g)
A. Oxidation and addition
B. Oxidation and substitution
C. Reduction and addition
D. Reduction and substitution
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22M.1.sl.TZ2.25:
Which structure represents a repeating unit of a polymer formed from propene?
A. –CH2–CH(CH3)–
B. –CH2–CH2–CH2–
C. –CH(CH3)–CH(CH3)–
D. –CH2–CH2–
- 22M.1.sl.TZ2.27: Which reaction mechanisms are typical for alcohols and halogenoalkanes?
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22M.1.hl.TZ2.35:
Which reaction involves homolytic fission?
A. CH4 + Cl2
B. CH3Br + NaOH
C. (CH3)3CBr + NaOH
D. C6H6 + HNO3 + H2SO4
- 22M.2.sl.TZ1.3d(ii): Deduce the structural formula of the repeating unit of the polymer formed from this alkene.
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22M.2.sl.TZ1.3e:
Deduce what would be observed when Compound B is warmed with acidified aqueous potassium dichromate (VI).
- 22M.2.sl.TZ1.3f(i): Identify the type of reaction.
- 22M.2.hl.TZ1.5b(iii): Deduce the structural formula of the repeating unit of the polymer formed from this alkene.
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22M.2.hl.TZ1.5c:
Deduce what would be observed when Compound B is warmed with acidified aqueous potassium dichromate (VI).
- 22M.2.hl.TZ1.5d(i): Identify the type of reaction.
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22M.2.sl.TZ2.4c:
Describe a test and the expected result to indicate the presence of carbon–carbon double bonds.
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22M.2.sl.TZ2.4d(ii):
Write the equation for the reaction between but-2-ene and hydrogen bromide.
-
22M.2.sl.TZ2.4d(iii):
State the type of reaction.
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22M.2.hl.TZ2.8c:
Describe a test and the expected result to indicate the presence of carbon–carbon double bonds.
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22M.2.hl.TZ2.8d(ii):
Write the equation for the reaction between but-2-ene and hydrogen bromide.
- 22M.2.hl.TZ2.8d(iii): State the type of reaction.