Chemistry 5070 · O Level · Carboxylic acids

Carboxylic acids — practice question

A student oxidises ethanol to ethanoic acid using acidified aqueous potassium manganate(VII).
(a(i))[1]

Name the apparatus labelled A.

(a(ii))[1]

What is apparatus A used for?

(b)[2]

Identify two mistakes in the student’s apparatus set-up.

(c(i))[1]

State why a Bunsen burner is unsuitable for heating the mixture of ethanol and potassium manganate(VII).

(c(ii))[1]

What should be used in place of a Bunsen burner?

(d)[1]

Name the separation process used after heating to obtain ethanoic acid from the mixture.

(e)[1]

Ethanoic acid is heated with a further sample of ethanol and sulfuric acid catalyst. Name the organic product.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: A condenser

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