O-LevelChemistryOrganic Chemistry5070/22 · May/June 2018 · Q65 Marks
The diagram shows the partial structure of a polyester. [Figure X.X]
- (a)Draw the partial structure of nylon.[1]
- (b)The diagram shows the partial structure of an addition polymer. [Figure X.X]
- (b)(i)What is meant by the term addition polymerisation?[2]
- (b)(ii)Draw the structure of the alkene that can be used to make this addition polymer.[1]
- (b)(iii)Describe one pollution problem associated with the disposal of this addition polymer.[1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2018). The mark or mark type is shown in brackets.
- [1] 6(a) [Figure for nylon partial structure, 1 mark]
- [2] 6(b)(i) monomers react together / monomers combine / monomers add together / monomers join / monomers link (1) to form only one product / to give one product and no other molecule / no by-product formed (1)
- [1] 6(b)(ii) [Figure for 2,3-dimethylbut-2-ene, 1 mark]
- [1] 6(b)(iii) non-biodegradable / causes litter/ fills land-fill sites / incineration produces atmospheric pollutants (1)
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