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A-LevelChemistryCarbonyl compounds9701/12 · May/June 2014 · Q261 Mark

Compound X, C4H8O, produces an orange precipitate when it is reacted with 2,4-dinitrophenylhydrazine reagent. Compound X produces a carboxylic acid when heated under reflux with an acidified solution of potassium dichromate(VI). What could be compound X?

Abutanal

Bbutanone

C2-methylbutanal

D4-hydroxybut-1-ene

✓ Correct answer

A: butanal

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About this question

Topic: Carbonyl compounds, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2014 Paper 1 Variant 2, question 26.

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