Carboxylic acids and derivatives (A-level only)

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Question 6
Medium

This question is about esters.

The diagram below shows an incomplete mechanism for the alkaline hydrolysis of methyl propanoate.

Incomplete mechanism for the alkaline hydrolysis of methyl propanoate

a.

Identify where three additional curly arrows are required to complete the steps of the mechanism. Describe each missing arrow's starting position and destination.

[3]
b.

Name the type of reaction shown.

[1]
c.

Deduce the role of the CH3O−\text{CH}_3\text{O}^-CH3​O− ion in step 3.

[1]
d.

A triester in animal fat reacts with potassium hydroxide in a similar way. Give a common use for the organic potassium salt product of this reaction.

[1]

Carboxylic acids and derivatives (A-level only) Questions

  1. A Level
  2. /Chemistry
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