Carboxylic acids: past paper questions
Real questions on carboxylic acids
The newest 20 of 31 written questions. Open one to see it on the real paper.
- 0971/42 · May/June 2026 · Q6e(ii)[1]
Give the chemical name of the organic product in method 1.
See it on the paper → - 0971/42 · May/June 2026 · Q6e(iii)[1]
Name the food product in method 2.
See it on the paper → - 0971/42 · October/November 2025 · Q6e[1]
Determine the number of unbranched esters which have the molecular formula C 5 H 10 O 2 .
See it on the paper → - 0971/32 · May/June 2024 · Q8a(i)[1]
State the trend in the boiling points of the carboxylic acids.
See it on the paper → - 0971/32 · May/June 2024 · Q8a(ii)[1]
Deduce the general formula for carboxylic acids.
See it on the paper → - 0971/41 · May/June 2024 · Q7d(ii)[2]
Esters are made by the reaction between carboxylic acids and alcohols. Ester X is methyl ethanoate. Name the carboxylic acid and the alcohol used to make methyl ethanoate. carboxylic acid alcohol
See it on the paper → - 0971/41 · May/June 2024 · Q7d(iii)[2]
Draw the displayed formula of carboxylic acid Y. Name the carboxylic acid. name [Total: 13]
See it on the paper → - 0971/32 · October/November 2022 · Q7a(i)[1]
Choose from the list the word that describes compound T. alcohol alkane alkene carboxylic acid
See it on the paper → - 0971/42 · October/November 2022 · Q6a[1]
State the general formula of carboxylic acids.
See it on the paper → - 0971/42 · October/November 2022 · Q6b[1]
Name carboxylic acid Y.
See it on the paper → - 0971/42 · October/November 2022 · Q6c[1]
Write the molecular formula of carboxylic acid Y.
See it on the paper → - 0971/42 · October/November 2022 · Q6d[3]
Complete the dot-and-cross diagram to show the arrangement of electrons in a molecule of carboxylic acid Y. O H C O H
See it on the paper → - 0971/32 · May/June 2022 · Q6a(iii)[1]
State which compound, C, D, E or F, is a carboxylic acid.
See it on the paper → - 0971/41 · May/June 2022 · Q5e[1]
Ethanoic acid is a member of the homologous series of carboxylic acids. State the general formula of this homologous series.
See it on the paper → - 0971/41 · May/June 2022 · Q5f[2]
Draw the structure of the carboxylic acid containing three carbon atoms. Show all of the atoms and all of the bonds.
See it on the paper → - 0971/42 · May/June 2022 · Q5e(ii)[1]
Name the homologous series compound C belongs to.
See it on the paper → - 0971/42 · May/June 2022 · Q5e(iii)[1]
Draw the structure of compound C. Show all of the atoms and all of the bonds. [Total: 15]
See it on the paper → - 0971/32 · October/November 2021 · Q2c(i)[1]
Deduce the number of carboxylic acid groups in one molecule of citric acid.
See it on the paper → - 0971/42 · October/November 2021 · Q6f(ii)[1]
Draw the structure of Y. Show all of the atoms and all of the bonds. [Total: 12]
See it on the paper → - 0971/31 · May/June 2021 · Q4a(ii)[1]
educe the formula of malic acid to show the number of carbon, hydrogen and oxygen D atoms.
See it on the paper →
What examiners said
The general formula of carboxylic acids, CnH2n+1COOH, was well known, but candidates need to be careful in the use of subscript. CnH2n+1COOH did not receive credit.
— Examiner report, October/November 2022, 0971/42 Q6(a) (Cambridge)
The name, methanoic acid, was well known. Candidates should be aware that the correct spelling is important for organic chemicals. ‘Methenoic acid’ suggests the presence of an alkene group.
— Examiner report, October/November 2022, 0971/42 Q6(b) (Cambridge)
Many candidates did not understand the definition of a molecular formula and gave the condensed structural formula HCOOH.
— Examiner report, October/November 2022, 0971/42 Q6(c) (Cambridge)
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