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Edexcel IAL Chemistry Polyester Formation

Practise Edexcel IAL Chemistry polyester formation through PLA, terylene-style monomers, ester links, repeat units and condensation polymerisation evidence.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
A2

Exam points

  • Deduce polyester repeat units from diols and dicarboxylic acids, checking ester links and continuation bonds.
  • Work backwards from a repeat unit to the two monomers, allowing displayed, structural or skeletal formulae.
  • Compare condensation polymerisation with addition polymerisation using small-molecule loss and atom economy.

15.16—How polyesters, such as terylene, are formed by condensation polymerisation reactions question 1

[Maximum number: 2]

This question is about carboxylic acids and their derivatives.

The repeat unit of a polyester is shown.

Figure for Question 15.16—How polyesters, such as terylene, are formed by condensation polymerisation reactions question 1 — Edexcel A-Level Chemistry A2

Give the structures of the two monomers that could form this polyester.
(2)

Table for Question 15.16—How polyesters, such as terylene, are formed by condensation polymerisation reactions question 1 — Edexcel A-Level Chemistry A2
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