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CAIE A-Level Chemistry AS 18.1.2 Describe Questions

Practise CAIE 9701 reactions of carboxylic acids, including balanced salt formation, esterification with alcohols and reduction to primary alcohols.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • form carboxylate salts with reactive metals, alkalis or carbonates and balance H2 or CO2 production
  • form an ester with an alcohol using concentrated H2SO4 catalyst and heat
  • reduce –COOH to –CH2OH with LiAlH4, accounting for the oxygen removed and water where equations require

CAIE A-Level Chemistry AS 18.1.2 Describe Questions question 1

[Maximum number: 1]

P is a carboxylic acid with molecular formula C5H10O2\mathrm{C}_{5} \mathrm{H}_{10} \mathrm{O}_{2}.
Carboxylic acid P reacts with an excess of LiAlH4\mathrm{LiAlH}_{4} to form compound Q.
Which pairs of molecules could be carboxylic acid P and compound Q ?

Table for Question CAIE A-Level Chemistry AS 18.1.2 Describe Questions question 1 — CAIE A-Level Chemistry AS
A

1 and 2

B

1 and 3

C

2 and 3

D

3 only

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