Edexcel Jun 2017 Paper 1 Q20

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SECTION B Answer ALL the questions. Write your answers in the spaces provided. 20 Compounds A and B are isomeric alkenes. CH3 CH3 C C CH3 C C CH3 D O N O T W R I T E I N T H I S A R E A (a) (i) Name compound A. (1)(ii) Give the molecular formula of compound B. (1)(iii) Explain why A and B are isomers. (2)12 *P53491A01232* D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A<br /> A E R A S I H T N I E T I R W T O N O D (iv) Draw the geometric isomer of compound B. (v) Explain why compound B has a geometric isomer but compound A does not. (1) (1)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 *P53491A01332* 13 Turn over<br /> (b) Compound C is an isomer of compounds A and B. Some reactions of compound C are shown below. H C C C C H Br Br H C C C C H Br OH KMnO4 and dilute H2SO4 compound D H H C C C C H H H compound C (i) Name the reagent(s) required for reaction 1. (1)(ii) Name the reagent(s) required for reaction 2. (1)(iii) Draw the displayed formula of compound D. (1) 14 *P53491A01432* D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A<br /> (c) Compound C also reacts with hydrogen chloride. (i) Classify the type and mechanism of this reaction. (2)(ii) Complete the diagram below by adding any dipoles and curly arrows relevant to the first step of the mechanism of this reaction. H H H C C C C H H Cl (iii) Draw the intermediate for the reaction which produces the major product. Hence show the final step of the mechanism and the product. Include relevant curly arrows, lone pairs and charges. (2) (4) 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 *P53491A01532* 15 Turn over<br /> (d) Compound C forms a polymer which, because of its temperature resistance, is used in hot water piping. Draw a section of this polymer, showing two repeat units. (1) (Total for Question 20 = 18 marks) 16 *P53491A01632* D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A<br /> 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 BLANK PAGE A E R A S I H T N I E T I R W T O N O D *P53491A01732* 17 Turn over<br />

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