A-LevelChemistryCarbonyl compounds9701/12 · Feb/Mar 2020 · Q371 Mark

Ethanal and hydrogen cyanide react together. The reaction mechanism involves cyanide ions. [Figure 37.1] Which statements about this mechanism are correct? 1 CN- acts as a catalyst. 2 CN- is a nucleophile. 3 It is an addition reaction.

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A1, 2 and 3 are correct

B1 and 2 only are correct

C2 and 3 only are correct

D1 only is correct

✓ Correct answer

A: 1, 2 and 3 are correct

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Topic: Carbonyl compounds, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2020 Paper 1 Variant 2, question 37.

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