O-LevelChemistryOrganic Chemistry5070/12 · May/June 2020 · Q371 Mark

Which structure shows the carboxylic acid with the lowest relative molecular mass?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

ADiagram of HCOOH (methanoic acid).

BDiagram of CH3COOH (ethanoic acid).

CDiagram of CH3COOH (ethanoic acid).

DDiagram of H-O-C-O-O-H.

✓ Correct answer

A: Diagram of HCOOH (methanoic acid).

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Topic: Organic Chemistry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2020 Paper 1 Variant 2, question 37.

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