Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Organic Chemistry
785 practice questions
Topics covered
Practice questions
281–290 of 317 · Easy
Question 281
3 marks · Easy
Answer and see the solution →Tetrafluoroethene is an alkene that can be polymerised to form poly(tetrafluoroethene).
(a)[1 mark]Give the molecular formula of tetrafluoroethene.
(b)[1 mark]Write the repeat unit of poly(tetrafluoroethene) as a formula.
(c)[1 mark]State one use of poly(tetrafluoroethene).
Question 282
2 marks · Easy
Answer and see the solution →A polymer is formed by the addition polymerisation of chloroethene. Each repeat unit in the polymer has the formula .
Calculate the total number of chlorine atoms in the polymer when it consists of 200 repeat units.
Question 283
2 marks · Easy
Answer and see the solution →The repeat unit of a polymer is shown below:
Explain how you can deduce the structure of the monomer used to form this polymer.
Question 284
2 marks · Easy
Answer and see the solution →A sample of poly(chloroethene) (PVC) contains 600 repeat units. Each repeat unit has the formula .
Calculate the total number of chlorine atoms present in the polymer sample.
Question 285
1 mark · Easy
Answer and see the solution →State why addition polymers such as poly(ethene) are considered non-biodegradable.
Question 286
3 marks · Easy
Answer and see the solution →(a)[1 mark]State one reason why addition polymers remain in landfill sites for many years.
(b)[1 mark]Name one environmental problem that can result from the accumulation of waste addition polymers.
(c)[1 mark]Give one advantage of recycling addition polymers instead of disposing of them in landfill.
Question 287
2 marks · Easy
Answer and see the solution →A country produces 1,500,000 tonnes of plastic waste each year. If 60% of it is made of addition polymers, calculate the mass of addition polymer waste produced per year. Give your answer in tonnes.
Question 288
2 marks · Easy
Answer and see the solution →Explain why burying addition polymers in landfill sites is not a sustainable solution for managing plastic waste.
Question 289
3 marks · Easy
Answer and see the solution →The table shows waste disposal methods for plastics in three cities.
City Landfill (%) Incineration (%) Recycling (%) A 60 10 30 B 40 35 25 C 25 20 55 (a)[1 mark]Which city recycles the largest proportion of its plastic waste?
(b)[1 mark]Name the city with the highest proportion of plastic waste sent to landfill.
(c)[1 mark]State one environmental advantage of recycling plastics instead of incinerating them.
Question 290
1 mark · Easy
Answer and see the solution →Name one feature of addition polymers that makes them persist in the environment for a long time.