Making a polyester

3 marks · Easy

This question is about polyester formation.

(a)

Complete the sentence: Polyesters are made by __________ polymerisation.

[1 mark]

(b)

State the two functional groups needed on the monomers to form a polyester.

[2 marks]

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(a) condensation

(b) Carboxylic acid (–COOH) and alcohol (–OH) · must show –COOH, –OH

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Marking points

B1 (a) · 1 mark · Correctly completes with 'condensation'.

B2 (b) · 1 mark · States 'carboxylic acid (–COOH)' functional group.

B3 (b) · 1 mark · States 'alcohol (–OH)' functional group.

Worked solution

a) Polyesters are made by condensation polymerisation. b) The two functional groups are carboxylic acid (–COOH) and alcohol (–OH).