A-LevelChemistryAnalytical techniques9701/12 · May/June 2021 · Q301 Mark

The molecular formula of Z is C₄H₈O. The infra-red spectrum of Z is shown. [Infrared spectrum graph] What could be Z?

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.

A[Diagram A: Butan-2-one]

B[Diagram B: Cyclobutanone]

C[Diagram C: Butanoic acid]

D[Diagram D: But-3-en-1-ol]

✓ Correct answer

D: [Diagram D: But-3-en-1-ol]

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Topic: Analytical techniques, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2021 Paper 1 Variant 2, question 30.

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