DP Chemistry Questionbank

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• 18M.3.hl.TZ2.27b: Predict the chemical shifts and integration for each signal in the 1H NMR spectrum for ethanol...
• 18M.3.hl.TZ2.27a: Fuel cells use an electrochemical process to determine the concentration of ethanol. Formulate...
• 18M.3.hl.TZ1.20b: Explain how hexane and propanone may be separated by fractional distillation.
• 18M.3.hl.TZ1.20a: Hexane and propanone have vapour pressures of 17 kPa and 24 kPa respectively at 20 °C. Calculate...
• 17N.3.hl.TZ0.27: Ethanol slows down the reaction time of a driver leading to traffic accidents. Explain how the...
• 17N.3.hl.TZ0.22a.ii: Deduce which spectrum belongs to paracetamol, giving two reasons for your choice. Use section 26...
• 17N.3.hl.TZ0.22a.i: Both spectra show a peak at wavenumber 1700 cm–1. Identify the bond responsible for this peak.
• 17M.3.hl.TZ1.29d: A breathalyser measures the blood alcohol content from a breath sample. Formulate half-equations...
• 17M.3.hl.TZ1.25d: Some mild analgesics contain a solid mixture of acidic aspirin and a non-acidic organic chemical...
• 16N.3.hl.TZ0.29b: One class of performance-enhancing drugs is the anabolic steroids. Detection of these drugs in...
• 16N.3.hl.TZ0.29a: Suggest what may have led to these changes in acceptable concentrations.
• 16M.3.hl.TZ0.23c: Using sections 26 and 37 of the data booklet, deduce, giving two reasons, which spectrum is that...
• 15M.3.hl.TZ2.19b: Explain how the ethanol concentration in the breath can be measured by an intoximeter using...
• 15M.3.hl.TZ2.19a.i: The breathalyser, one of the earliest tests, uses the reaction between ethanol and acidified...
• 15M.3.hl.TZ2.19a.ii: Outline why the colour changes from orange to green.
• 13N.3.hl.TZ0.15a.i: Identify the molecule which is most similar to Antifebrin in terms of size and structure.
• 13N.3.hl.TZ0.15a.ii: State the names of the two functional groups that both molecules have in common.
• 13N.3.hl.TZ0.14b: The concentration of ethanol is determined by passing IR radiation through a breath sample....
• 13N.3.hl.TZ0.14a.i: Use Table 17 of the Data Booklet to identify the wavenumber range used in the determination.
• 13N.3.hl.TZ0.14a.ii: State why the absorption in the range 3200 to 3600 \({\text{c}}{{\text{m}}^{ - 1}}\) is not used.
• 13M.3.sl.TZ1.D2b.v: State the name of the organic product formed.
• 13M.3.sl.TZ1.D2b.iv: Deduce the full balanced chemical equation for the redox reaction of ethanol with acidified...
• 13M.3.sl.TZ1.D2c: An intoximeter is used to determine an accurate value for the concentration of ethanol in the...
• 13M.3.sl.TZ1.D2b.ii: Describe the colour change observed during its reaction with ethanol.
• 13M.3.sl.TZ2.D2b.ii: State the name of the organic product formed during the reaction.
• 13M.3.sl.TZ2.D2c: In order to quantify exactly how much ethanol is present in the blood, a person may be required...
• 13M.3.sl.TZ2.D2b.i: Describe the colour change observed when the dichromate ion reacts with the ethanol.
• 09M.3.sl.TZ2.D3b: Police use the intoximeter, an infrared spectrophotometer to confirm a roadside breathalyser...
• 09M.3.sl.TZ2.D3a.ii: Describe the colour change that occurs to the acidified dichromate(VI) if ethanol is present in...
• 12M.3.hl.TZ1.D1a: Identify the region of the electromagnetic spectrum used to detect the presence of ethanol.