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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: 2]

Allyl chloride is an important chemical used in the manufacture of plastics, pharmaceuticals and pesticides.

allyl chloride

allyl chloride

A series of reactions starting from allyl chloride is shown.

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

In reaction 2, the organic product of reaction 1 is mixed with concentrated H2SO4\mathrm{H}_{2} \mathrm{SO}_{4} and an organic acid, and then heated under reflux.

State the role of the concentrated H2SO4\mathrm{H}_{2} \mathrm{SO}_{4}. Identify the organic acid used.
role of the concentrated H2SO4\mathrm{H}_{2} \mathrm{SO}_{4}
identity of the organic acid

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