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Date	November 2013	Marks available	1	Reference code	13N.1.sl.TZ0.23
Level	SL	Paper	1	Time zone	TZ0
Command term	Deduce	Question number	23	Adapted from	N/A

Question

What is the name of ${\text{C}}{{\text{o}}_{\text{3}}}{{\text{(P}}{{\text{O}}_{\text{4}}}{\text{)}}_{\text{2}}}$ ?

A. Cobalt(II) phosphite

B. Cobalt(II) phosphate

C. Cobalt(III) phosphite

D. Cobalt(III) phosphate

Markscheme

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Syllabus sections

Core » Topic 9: Redox processes » 9.1 Oxidation and reduction

Show 165 related questions

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17M.1.sl.TZ2.22: Which of the following is not a redox reaction? A. CH4(g) + Cl2(g) → CH3Cl(g) +...
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17M.2.hl.TZ1.4a: Formulate an equation for the oxidation of nickel(II) sulfide to nickel(II) oxide.
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17M.2.sl.TZ1.3b: Formulate an equation for the reaction between VO2+(aq) and V2+(aq) in acidic solution to...
17M.2.sl.TZ1.3a: Determine the oxidation state of vanadium in each of the following species.
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17M.1.hl.TZ1.28: Which change represents oxidation? A. HClO4 to HClO3 B. N2 to NH3 C. N2O to...
17M.1.sl.TZ1.22: What is the oxidation half-equation in the redox reaction? 2S2O32–(aq) + I2(aq) → S4O62–(aq)...
17M.1.sl.TZ1.21: What is the order of decreasing reactivity of the metals (most reactive first)? Zn(s) +...
16N.3.sl.TZ0.1c: Despite widespread improvements in the provision of safe drinking water, the sale of bottled...
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16N.2.sl.TZ0.4g: Magnesium chloride can be electrolysed. Deduce the half-equations for the reactions at each...
16N.2.sl.TZ0.1b: Determine the average oxidation state of carbon in ethene and in...
16N.1.sl.TZ0.21: Which is a correct statement for the reaction below? 2MnO4-(aq) + 6H+(aq) + 5NO2-(aq) →...
16N.1.sl.TZ0.17: Which experimental methods could be used to observe the progress of the following...
16M.2.hl.TZ0.1b: Phosphine is usually prepared by heating white phosphorus, one of the allotropes of...
16M.2.sl.TZ0.1b: Phosphine is usually prepared by heating white phosphorus, one of the allotropes of...
16M.1.hl.TZ0.30: Applying IUPAC...
16M.1.sl.TZ0.21: Applying IUPAC rules, what is the name of MnO2? A. Magnesium(II) oxide B. Manganese(II)...
15M.1.hl.TZ1.30: Which represents a redox reaction? A. ...
15M.1.hl.TZ2.30: Which is a redox reaction? A. ...
15M.2.hl.TZ1.6e: Bromine reacts with aqueous sodium...
15M.2.hl.TZ1.7a.ii: Determine the oxidation number of carbon in ethanol and ethanal. Ethanol: Ethanal:
15M.2.hl.TZ1.7a.iii: Deduce the half-equation for the oxidation of ethanol to ethanal.
15M.2.hl.TZ1.7a.iv: Deduce the overall redox equation for the reaction of ethanol to ethanal with acidified...
15M.2.hl.TZ2.8b.i: State the name of ${\text{C}}{{\text{r}}_{\text{2}}}{{\text{O}}_{\text{3}}}$ .
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15M.2.hl.TZ2.8d.i: The dichromate ion,...
15M.2.hl.TZ2.8d.ii: Explain in terms of oxidation numbers whether iodine is oxidized or reduced in part (d) (i).
15M.1.sl.TZ1.23: Which represents a redox reaction? A. ...
15M.1.sl.TZ1.24: Which species can oxidize ethanol to ethanoic acid? A. ${{\text{I}}^ - }$ B. ...
15M.1.sl.TZ2.23: What are the oxidation states of each element in...
15M.1.sl.TZ2.24: What is the coefficient for I– when the following equation is balanced using the smallest...
15M.2.sl.TZ1.2d: Bromine reacts with aqueous sodium...
15M.2.sl.TZ1.7c.iii: Deduce the half-equation for the oxidation of ethanol to ethanal.
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15M.2.sl.TZ1.7c.iv: Deduce the overall redox equation for the reaction of ethanol to ethanal with acidified...
14M.1.hl.TZ2.31: Which species are the oxidizing and reducing agents in the following...
14M.2.hl.TZ1.6a: Alcohols with the molecular formula...
14M.2.hl.TZ2.5c: (i) Deduce a balanced equation for the reaction between the chlorate(I) ion and sulfur...
14M.1.sl.TZ2.23: What are the correct oxidation numbers of chromium in...
14M.2.sl.TZ1.6a: Define oxidation in terms of electron transfer.
14M.1.sl.TZ1.23: At which side of the equation are electrons, ${{\text{H}}^ + }$ ions and...
14M.1.sl.TZ1.24: What are the correct names for ${\text{KMn}}{{\text{O}}_{\text{4}}}$ and...
14M.2.sl.TZ1.6b: (i) Deduce the oxidation number of chromium in...
14M.2.sl.TZ2.4d: (i) Deduce the coefficients required to balance the half-equations given below. ___...
14M.3.sl.TZ1.16b: (i) $1.50 \times {10^{ - 4}}{\text{ mol}}$ of ${{\text{I}}^ - }{\text{(aq)}}$ was...
14N.2.hl.TZ0.10a: (i) Identify whether half-equation 1 represents oxidation or reduction, giving a reason...
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14N.1.sl.TZ0.23: Which species of vanadium has a different oxidation number from the rest? A. ...
14N.1.sl.TZ0.24: Which statement is correct for the following...
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13N.1.hl.TZ0.32: Consider the following...
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13N.3.hl.TZ0.9b.iv: The reducing agent in the cytochrome oxidase reaction is a species that can be denoted as...
13N.1.sl.TZ0.24: Consider the following...
13N.2.sl.TZ0.5b.iii: Deduce which of the six species is the strongest oxidizing agent.
13N.2.sl.TZ0.5a.i: State the initial and final oxidation numbers of titanium and hence deduce whether it is...
13N.2.sl.TZ0.5b.i: Deduce which of the species would react with titanium metal.
13N.2.sl.TZ0.5b.ii: Deduce the balanced equation for this reaction.
13M.2.hl.TZ1.4e.i: The standard electrode potential for the half-equation involving ethanedioic acid...
13M.2.hl.TZ1.4d: Deduce the half-equation involving ethanedioic acid.
13M.2.hl.TZ1.7b.iv: Deduce the oxidation number of iron in...
13M.1.sl.TZ1.23: Which statement is correct about a reducing agent? A. It is reduced by gaining...
13M.1.sl.TZ1.24: What is the correct increasing order of reactivity of the metals X, Y and Z based on the...
13M.2.sl.TZ1.4b: Calculate the change in oxidation numbers of carbon and...
13M.2.sl.TZ1.4a: Define oxidation in terms of electron transfer.
13M.2.sl.TZ1.4c: Identify the oxidizing and reducing agents. Oxidizing agent: Reducing agent:
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13M.3.sl.TZ1.D2b.iii: State the oxidation number of chromium in the product.
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13M.2.hl.TZ2.7a: Define oxidation in terms of oxidation number.
13M.2.hl.TZ2.7b.i: Deduce the balanced chemical equation for the redox reaction of copper, Cu(s), with nitrate...
13M.2.hl.TZ2.7c.iii: Deduce a balanced chemical equation, including state symbols, for the overall reaction which...
13M.1.sl.TZ2.23: Which statement describes a reducing agent? A. It is reduced and gains electrons. B. ...
13M.1.sl.TZ2.24: Which is the oxidizing agent in the following...
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13M.2.sl.TZ2.1f.i: One titration was abandoned because a brown precipitate, manganese(IV) oxide, formed. State...
12N.1.sl.TZ0.23: What is the correct systematic name of MnO2? A. Manganese(II) oxide B. ...
12N.2.sl.TZ0.5a: (i) Define oxidation and reduction in terms of electron loss or...
10N.1.hl.TZ0.30: Consider the following...
10N.1.hl.TZ0.31: The following equations indicate reactions that occur...
10N.1.sl.TZ0.23: Consider the following...
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09N.1.hl.TZ0.29: Which compound contains nitrogen with an oxidation number of +3? A. NH4Cl B. ...
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10M.1.sl.TZ2.24: In which species does sulfur have an oxidation number of 0? A. ...
10M.1.sl.TZ2.25: What is the reducing agent in the reaction...
10M.2.sl.TZ2.5c: (i) Determine the oxidation number of lead in Pb,...
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09M.2.sl.TZ1.4b.ii: Deduce which species has been oxidized in this reaction and state the change in oxidation...
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09M.1.sl.TZ2.24: Which species is oxidized in the following...
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