A-LevelChemistryCarboxylic acids and derivatives9701/12 · May/June 2014 · Q281 Mark

The diagram shows the structure of ethanedioic acid. [Figure 28.1] Ethanedioic acid reacts with ethanol in the presence of a few drops of concentrated sulfuric acid to form a diester. The molecular formula of the diester is C6H10O4. What is the structural formula of the diester?

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ACH3CH2CO2CO2CH2CH3

BCH3CH2OCOCO2CH2CH3

CCH3CH2O2CO2CCH2CH3

DCH3CO2CH2CH2OCOCH3

✓ Correct answer

B: CH3CH2OCOCO2CH2CH3

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Topic: Carboxylic acids and derivatives, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2014 Paper 1 Variant 2, question 28.

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The diagram shows the structure of ethanedioic acid. [Figure 28.1] Ethanedioic acid reacts with ethanol in the presence of a few drops of concentrated sulfuric acid to form a diester. The molecular formula of the diester is C6H10O4. What is the structural formula of the diester?

✓ Correct answer

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