A-LevelChemistryCarboxylic acids and derivatives9701/12 · May/June 2020 · Q201 Mark
Compound X is shown. [Diagram of Compound X: a benzene ring with -COOH and -OH attached to adjacent carbons.] X is treated separately with NaOH(aq) and LiAlH4 to give Y and Z. [Reaction scheme showing X reacting with NaOH(aq) to give Y, and X reacting with LiAlH4 to give Z.] What are Y and 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 showing Y: benzene ring with -CO2Na and -OH. Diagram showing Z: benzene ring with -CH2OH and -OH.]
B[Diagram showing Y: benzene ring with -CO2Na and -OH. Diagram showing Z: benzene ring with -COOH and -OH.]
C[Diagram showing Y: benzene ring with -CO2Na and -ONa. Diagram showing Z: benzene ring with -CH2OH and -OH.]
D[Diagram showing Y: benzene ring with -CO2Na and -ONa. Diagram showing Z: benzene ring with -COOH and -OH.]
✓ Correct answer
A: [Diagram showing Y: benzene ring with -CO2Na and -OH. Diagram showing Z: benzene ring with -CH2OH and -OH.]
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