A-LevelChemistryCarboxylic acids and derivatives9701/12 · May/June 2024 · Q381 Mark

The diagrams show the structures of two esters, X and Y, that are formed in ripening apples. [Figure 38.1: ester X and ester Y structures] Which carboxylic acids are formed when these esters are hydrolysed by H2SO4(aq)? [Table 38.1]

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Aester X: CH3COOH, ester Y: CH3CH2COOH

Bester X: CH3COOH, ester Y: CH3CH2CH(CH3)COOH

Cester X: CH3CH(CH3)CH2COOH, ester Y: CH3CH2COOH

Dester X: CH3CH(CH3)CH2COOH, ester Y: CH3CH2CH(CH3)COOH

✓ Correct answer

B: ester X: CH3COOH, ester Y: CH3CH2CH(CH3)COOH

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Topic: Carboxylic acids and derivatives, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2024 Paper 1 Variant 2, question 38.

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The diagrams show the structures of two esters, X and Y, that are formed in ripening apples. [Figure 38.1: ester X and ester Y structures] Which carboxylic acids are formed when these esters are hydrolysed by H2SO4(aq)? [Table 38.1]

✓ Correct answer

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