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CAIE A-Level Chemistry A2 35.1.1 Formation of Polyesters Questions

Practise describing polyester formation from diols, dicarboxylic acids, dioyl chlorides and hydroxycarboxylic acids.

Syllabus
2028–2030
Course
Chemistry 9701
Level
A2

Exam points

  • describe condensation between diols and dicarboxylic acids or dioyl chlorides
  • describe polyester formation from hydroxycarboxylic acids
  • identify ester links and condensation products in polyester formation

CAIE A-Level Chemistry A2 35.1.1 Formation of Polyesters Questions question 1

[Maximum number: 1]

Lactic acid, CH3CH(OH)COOH\mathrm{CH}_{3} \mathrm{CH}(\mathrm{OH}) \mathrm{COOH}, is the only monomer needed to form the polymer polylactic acid, PLA.

Give the name of the type of polymerisation involved in the formation of PLA and the name of the functional group that forms between the monomers.
type of polymerisation
functional group

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