CAIE A Level Chemistry 9701 · Polymerisation
Chloroethene, , is a monomer used to make the polymer poly(chloroethene), also called PVC.
(a) State the type of polymerisation reaction that produces poly(chloroethene) from chloroethene.
(b) The repeating unit of poly(chloroethene) is . Suggest why the polymerisation of chloroethene is classed as addition polymerisation rather than condensation polymerisation.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Suggest means: Apply what you know to an unfamiliar situation. There may be more than one acceptable answer. Reason from the principle you have learned to the new context, and say which principle you are using.
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