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10.3 Polymers

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Question 11
H

Lactic acid, CH3CH(OH)COOH\mathrm{CH_{3}CH(OH)COOH}CH3​CH(OH)COOH, is used to make the polymer poly(lactic acid).

Statement 1: lactic acid can form a polyester on its own, because each molecule has both an –OH group and a –COOH group

Statement 2: poly(lactic acid) is an addition polymer, because the monomers join end to end in a long chain

Statement 3: the relative formula mass of the repeating unit is 18 less than that of lactic acid

Which statements are correct?

[1]
A

1 only

B

1 and 3 only

C

2 and 3 only

D

1, 2 and 3

Markscheme

10.3 Polymers Questions

  1. GCSE
  2. /Chemistry
  3. /10.3 Polymers

37 exam-style questions on Edexcel GCSE Chemistry 10.3 Polymers, covering 10.3.1 Addition polymerisation of alkenes, 10.3.2 Uses and properties of polymers, 10.3.3 Condensation polymers and polyesters, 10.3.4 Problems with polymers and recycling, and 10.3.5 Natural polymers: DNA, starch and proteins. Each one has a worked solution and a mark scheme showing where the marks go.

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