A-LevelChemistryCarbonyl compounds9701/12 · Oct/Nov 2016 · Q281 Mark

Which row correctly describes the reactivity of aldehydes and ketones?

Awith NaBH₄: both react; with H⁺/Cr₂O₇²⁻(aq): both react

Bwith NaBH₄: both react; with H⁺/Cr₂O₇²⁻(aq): only aldehydes react

Cwith NaBH₄: only ketones react; with H⁺/Cr₂O₇²⁻(aq): both react

Dwith NaBH₄: only ketones react; with H⁺/Cr₂O₇²⁻(aq): only aldehydes react

✓ Correct answer

B: with NaBH₄: both react; with H⁺/Cr₂O₇²⁻(aq): only aldehydes react

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Topic: Carbonyl compounds, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2016 Paper 1 Variant 2, question 28.

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