A-LevelChemistryHydroxy compounds9701/12 · May/June 2025 · Q321 Mark

Four reagents are listed. 1 aqueous KCl 2 dilute HCl 3 liquid SOCl2 4 solid PCl5 Which reagents, when added to ethanol, will rapidly produce a gas that turns blue litmus red?

A1 and 2

B1 and 3

C2 and 4

D3 and 4

✓ Correct answer

D: 3 and 4

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Topic: Hydroxy compounds, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2025 Paper 1 Variant 2, question 32.

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