DP Chemistry (last assessment 2024)

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Question 20N.3.hl.TZ0.3c

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Date November 2020 Marks available [Maximum mark: 3] Reference code 20N.3.hl.TZ0.3c
Level hl Paper 3 Time zone TZ0
Command term Classify, Deduce Question number c Adapted from N/A
c.
[Maximum mark: 3]
20N.3.hl.TZ0.3c
Carbon fibre reinforced plastic (CFRP) is a useful composite. Epoxy is a thermoset polymer that is used as a binding polymer when making CFRP.

 

(c)

Classify PVC and polyethene terephthalate, PET, as addition or condensation polymers and deduce the structural formulas.

[3]

Markscheme

PVC: addition AND PET: condensation ✔

structure of PVC monomer ✔

structure of PET monomers ✔


Accept full OR condensed structural formulas.

Examiners report

This question on PVC and PET was very well answered. All three marks for their correct classification and the corresponding structures of their monomers was frequently scored.

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