Explain4 marksStandard
Poly(chloroethene) (PVC) is an addition polymer produced from chloroethene, . Explain two difficulties associated with the disposal of PVC waste.
CAIE A Level Chemistry 9701 · Polymerisation
Polymerisation: explain question
How this question is marked
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.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
More Polymerisation questions
- 4 marks · A polyester is formed by reacting propane-1,3-diol with butanedioyl dichloride, ClOCCH2CH2COCl. Suggest the structure of the repeat unit…
- 5 marks · Compare the formation of a polyester from butane-1,4-diol and hexanedioic acid with the formation of a polyamide from butane-1,4-diamine…
- 4 marks · Chloroethene, CH2=CHCl, is used to make the addition polymer poly(chloroethene), commonly known as PVC. (a) State the repeat unit of PVC…
- 4 marks · Waste poly(ethene) carrier bags and waste poly(chloroethene) (PVC) drainpipes are disposed of in a landfill site, or by burning in an…
- 5 marks · A section of a polymer is shown below. -NH-CO-(CH2)4-CO-NH-CO-(CH2)4-CO-NH- Compare the type of polymerisation reaction that produces this…
- 4 marks · Poly(ethene) is widely used for packaging. Explain two difficulties associated with the disposal of poly(alkene)s such as poly(ethene).
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.