A-LevelChemistryCarboxylic acids and derivativesMay/June 2024Paper 1 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]
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
The correct answer is B. This question tests the candidate's understanding of carboxylic acids and derivatives within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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