Edexcel Jun 2017 (IAL) Paper 4 Q15 (with explained solutions) |

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Edexcel Jun 2017 (IAL) Paper 4 Q15

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15 Which polymer is manufactured by a condensation polymerisation of a single substance? A Poly(2-methylpropenoate) B Poly(propene) C Poly(ethylene terephthalate) D Poly(lactic acid) (Total for Question 15 = 1 mark) TOTAL FOR SECTION A = 20 MARKS *P48385A0828* 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 *P48385A0928* Turn over<br />

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Question Number 13 Question Number 14(a) Answer 13. The only correct answer is B A is not correct because this is are all less polar so would take less time C is not correct because this is are all less polar so would take less time D is not correct because this is are all less polar so would take less time Answer 14(a). The only correct answer is D A is not correct because the compound is Z B is not correct because the compound is Z C is not correct because the hydroxyl group is not in the 7 position Question Number 14(b) Answer 14(b). The only correct answer is B A is not correct because m/e are all wrong C is not correct because m/e are all wrong D is not correct because m/e are all wrong Question Number 15 Answer 15. The only correct answer is D A is not correct because they are addition polymers B is not correct because they are addition polymers C is not correct because because it is formed from two different monomers Mark (1) Mark (1) Mark (1) Mark (1) TOTAL FOR SECTION A = 20 MARKS<br />
Section B Question Number 16(a)(i) Mark (1) Correct Answer Grind the reactant(s) together (using a pestle and mortar) OR Use powdered reactants OR Stir/mix (the reactants together) OR Add a few drops of water ALLOW dampen with water IGNORE Increase surface area Make solid particles smaller Add a catalyst Reject Heating/ raising temperature Change in pressure Addition of product Removal of reactants Dissolve Question Number 16(a)(ii) Moist/damp red litmus turns blue Correct Answer ALLOW moist/damp universal indicator paper turns blue ALLOW UI for universal indicator OR (Glass rod dipped in) concentrated HCl gives white smoke / (dense) white fumes ALLOW (Pass gas into) HCl gas/fumes IGNORE (white) solid / ammonium chloride / NH4Cl Reject Mark (1) Steamy /misty fumes/ ppt<br />

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