Edexcel Jun 2017 Paper 5 Q17 (with explained solutions) |

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Edexcel Jun 2017 Paper 5 Q17

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17 The formula of the repeat unit of a polymer is [OC(CH2)4CONH(CH2)6NH]. The polymer is formed by the reaction of Cl HO Cl HO Cl and H2N and H2N OH Cl and H2N NH2 NH2 NH2 OH and H2N NH2 (Total for Question 17 = 1 mark) 18 On combustion, 0.50 mol of a primary alcohol produced 45 g of water and 88 g of carbon dioxide. The alcohol could be A ethanol B propan-1-ol C butan-1-ol D pentan-1-ol Use this space for any rough working. Anything you write in this space will gain no credit. (Total for Question 18 = 1 mark) A E R A S I H T N I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D *P48070A0728* Turn over<br />

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Question Number 16 Correct Answer 16. The only correct answer is B Mark (1) A is not correct because the property which is essential is that the capsule is water soluble to release the detergent C is not correct because the property which is essential is that the capsule is water soluble to release the detergent D is not correct because the property which is essential is that the capsule is water soluble to release the detergent Question Number 17 Correct Answer 17. The only correct answer is A Mark (1) B is not correct because the OH and CONH2 groups will not react to form a polymer C is not correct because the number of (CH2) groups o in the polymer is incorrect D is not correct because the OH and NH2 groups will not react to form a polymer Question Number 18 Correct Answer 18. The only correct answer is C Mark (1) A is not correct because 1 mol alcohol gives 4 mol CO2 so 4C are present B is not correct because 1 mol alcohol gives 4 mol CO2 so 4C are present D is not correct because 1 mol alcohol gives 4 mol CO2 so 4C are present<br />

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