Carboxylic acids: past paper questions

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• Question 36May/June 2026, paper 12Multiple choice1 markHas a diagram

  Potassium ethanoate is made by reacting ethanoic acid with potassium hydroxide. What else is formed in the reaction?

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• Question 34Oct/Nov 2025, paper 11Multiple choice1 mark

  Which statement about aqueous ethanoic acid is correct?

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• Question 17Oct/Nov 2024, paper 11Multiple choice1 mark

  Which statements about dilute ethanoic acid are correct?

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• Question 32Oct/Nov 2023, paper 21Multiple choice1 markHas a diagram

  What is the structure of butanoic acid?

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• Question 37May/June 2026, paper 13Multiple choice1 mark

  Four equations involving ethanoic acid are listed.

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• Question 35Oct/Nov 2025, paper 12Multiple choice1 markHas a diagram

  L and M are different homologous series. The first three members of homologous series L all decolourise aqueous bromine. The first three members of homologous series M all dissolve in water to give solutions with a pH below 7.

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• Question 36Oct/Nov 2024, paper 12Multiple choice1 markHas a diagram

  What are the properties of aqueous ethanoic acid?

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• Question 34Oct/Nov 2023, paper 21Multiple choice1 mark

  Esters are formed when a carboxylic acid reacts with an alcohol. What is the catalyst for this reaction?

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• Question 31May/June 2026, paper 21Multiple choice1 mark

  Which statement about members of the carboxylic acid homologous series is correct?

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• Question 34Oct/Nov 2025, paper 13Multiple choice1 markHas a diagram

  The equation shows the reaction between ethanoic acid and solid P to produce Q and hydrogen.

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• Question 38Oct/Nov 2024, paper 13Multiple choice1 mark

  Ethanoic acid reacts with aqueous sodium carbonate. Which gas is given off in this reaction?

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• Question 37Oct/Nov 2023, paper 23Multiple choice1 markHas a diagram

  A compound with the formula ${\text{CH}}_3{\text{COOC}}_2{\text{H}}_5$ is formed from ethanol in two separate reactions.

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• Question 15May/June 2026, paper 22Multiple choice1 mark

  Ethanol and ethanoic acid react to form ethyl ethanoate and water.

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• Question 20Oct/Nov 2025, paper 21Multiple choice1 mark

  Which statement describes a property of ethanoic acid?

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• Question 35Oct/Nov 2024, paper 21Multiple choice1 mark

  Which process converts ${\text{CH}}_3{\text{CH}}_2\text{OH}$ to ${\text{CH}}_3\text{COOH}$?

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• Question 7Oct/Nov 2023, paper 31Structured13 marksHas a diagram

  Fig. 7.1 shows the displayed formula of compound S. On Fig. 7.1, draw a circle around the carboxylic acid functional group.

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• Question 22May/June 2026, paper 23Multiple choice1 mark

  Which statement about ethanoic acid is correct?

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• Question 37Oct/Nov 2025, paper 21Multiple choice1 mark

  What is produced by the bacterial oxidation of ethanol?

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• Question 36Oct/Nov 2024, paper 21Multiple choice1 markHas a diagram

  The structure of an ester is shown. Which row identifies the name of the ester and the two compounds from which it is made?

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• Question 7Oct/Nov 2023, paper 32Structured13 marksHas a diagram

  Fig. 7.1 shows the displayed formula of fumaric acid. On Fig. 7.1, draw a circle around one carboxylic acid functional group.

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• Question 4May/June 2026, paper 32Structured9 marksHas a diagram

  This question is about organic compounds and their reactions. Compound P is saturated. Figure 4.1 shows the displayed formula of compound P. Figure 4.1 On Figure 4.1, draw a circle around the alcohol functional group.

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• Question 35Oct/Nov 2025, paper 22Multiple choice1 mark

  The structure of an ester is shown. What is the name of this ester?

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• Question 34Oct/Nov 2024, paper 23Multiple choice1 mark

  Which processes are used to make ethanoic acid?

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• Question 6Oct/Nov 2023, paper 41Structured17 marks

  Ethanol is manufactured by two methods: method 1 fermentation of aqueous glucose method 2 catalytic addition of steam to an alkene. Method 1 takes place at room temperature and pressure. State two other conditions needed in method 1.

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• Question 6May/June 2026, paper 42Structured14 marks

  Alcohols are a homologous series of organic compounds. Table 6.1 gives some information about alcohols A, B, C and D. State why the homologous series of alcohols have similar chemical properties.

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• Question 36Oct/Nov 2024, paper 23Multiple choice1 markHas a diagram

  How many of each type of bond are present in ethanoic acid, ${\text{CH}}_3\text{COOH}$?

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• Question 6Oct/Nov 2023, paper 43Structured12 marksHas a diagram

  Esters are members of a homologous series of organic compounds. Give two characteristics that are the same for all members of a homologous series.

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• Question 36May/June 2023, paper 11Multiple choice1 mark

  Which substances react with aqueous ethanoic acid to form a gas?

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• Question 6Oct/Nov 2025, paper 42Structured8 marksHas a diagram

  Compound E shown in Fig. 6.1 is an ester. Fig. 6.1 On Fig. 6.1, draw a circle around all the atoms which make up the ester linkage.

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• Question 38May/June 2024, paper 13Multiple choice1 markHas a diagram

  The structure of a compound, G, is shown. G is in the same homologous series as ethanoic acid.

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