Edexcel Jun 2017 (IAL) Paper 1 Q18 (with explained solutions) |

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Edexcel Jun 2017 (IAL) Paper 1 Q18

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18 Copolymers are formed from two different monomers. The repeat unit of a copolymer is C C C CH3 This copolymer is formed from ethene and A propane. B propene. C 2-methylbutane. D 2-methylbut-1-ene. (Total for Question 18 = 1 mark) TOTAL FOR SECTION A = 20 MARKS 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 *P48382A0924* Turn over<br />

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Mark (1) Mark (1) Mark (1) Correct Answer 16. The only correct answer is D A is not correct because hydrogen peroxide does not react with propene to give a diol B is not correct because oxygen and water do not react with propene to give a diol C is not correct because aqueous sodium hydroxide does not react with propene to give a diol Correct Answer 17. The only correct answer is A B is not correct because bromine, not HBr, is needed to produce dibromopropane C is not correct because bromine, not HBr, is needed to produce bromopropanol D is not correct because bromine water, not HBr, is needed to produce bromopropanol Correct Answer 18. The only correct answer is B A is not correct because another alkene is required to react with ethene C is not correct because another alkene is required to react with ethene D is not correct because an alkene with 3C atoms is required to react with ethene TOTAL FOR SECTION A = 20 MARKS Question Number 16 Question Number 17 Question Number 18<br />
Section B Question Number 19a(i) Question Number 19a(ii) Acceptable Answers Reject Mark (2) (6.10x54 + 92.0x56 +1.90x57) (1) 100 = (5589.7 /100) =55.9 Final answer must be to 3 SF IGNORE Units (1) Correct answer with no working shown scores (2) 55.89/ 55.90 Acceptable Answers Reject Mark X = Fe / iron. ALLOW Fe+ Fe with negative charge (2) protons 26 electrons 25 neutrons 30 MP1 Identity of X and proton number (1) MP2 number of electrons and neutrons No TE for MP2 for wrong element (1) Question Number 19a(iii) Acceptable Answers Reject Mark X2+/ Fe2+ forms IGNORE any atomic numbers or mass numbers Fe2- Silicon, Si, + Ni, Si+, N2 (1)<br />

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