A-LevelChemistryOrganic synthesis9701/12 · May/June 2012 · Q221 Mark

When 1-bromopropane is treated in succession with two reagents, X and Y, it produces propanoic acid. What are reagents X and Y?

ANaOH(aq) H+/Cr2O72-(aq)

BNaOH(aq) CO2

CKCN in ethanol HCl(aq)

DKCN in ethanol NaOH(aq)

✓ Correct answer

A: NaOH(aq) H+/Cr2O72-(aq)

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Topic: Organic synthesis, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2012 Paper 1 Variant 2, question 22.

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