O-LevelChemistryOrganic Chemistry5070/11 · Oct/Nov 2020 · Q371 Mark

The reactions listed all involve ethanol. 1 C2H5OH + O2 → CH3COOH + H2O 2 C2H5OH + CH3COOH → CH3COOC2H5 + H2O 3 C6H12O6 → 2C2H5OH + 2CO2 Which row correctly describes each reaction?

A1: combustion, 2: acidification, 3: fermentation

B1: combustion, 2: esterification, 3: addition

C1: oxidation, 2: acidification, 3: addition

D1: oxidation, 2: esterification, 3: fermentation

✓ Correct answer

D: 1: oxidation, 2: esterification, 3: fermentation

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Topic: Organic Chemistry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2020 Paper 1 Variant 1, question 37.

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