How to deduce the polymerisation reaction for any alkene

2 marks · Normal

Poly(butene) is a polymer formed by the addition polymerisation of butene (CH2=CHCH2CH3).

State:

(a)

the name of the monomer used to make poly(butene)

[1 mark]

(b)

the type of bond in butene that allows it to undergo addition polymerisation

[1 mark]

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(a) butene

(b) double bond (C=C)

Common mistakes: Naming the polymer instead of the monomer; Incorrectly naming the type of bond (e.g. 'single' or 'ionic')

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Marking points

B1 (a) · 1 mark · Identifies butene as the correct monomer

B2 (b) · 1 mark · States that the polymerisation occurs at the double bond or C=C bond

Worked solution

a) The monomer used is butene.

b) It is the double bond (C=C) in butene that allows addition polymerisation.