Edexcel Jun 2017 (IAL) Paper 2 Q18

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18 A sample of butan-2-ol was oxidised by heating under reflux with an oxidising agent and then the product was separated for infrared analysis. Apart from the peaks due to the CC and CH bonds, which peaks would be present in the IR spectrum of the oxidation product? A A peak due to C=O only. B A peak due to OH only. C Peaks due to C=O and OH. D Peaks due to CO, C=O and OH. (Total for Question 18 = 1 mark) D O N O T W R I T E I N T H I S A R E A 19 Which greenhouse gas is produced only as a result of anthropogenic activity? A carbon dioxide B dichlorodifluoromethane C methane D water vapour 20 The first ionisation energy of strontium is less endothermic than that of calcium. (Total for Question 19 = 1 mark) The best explanation for this is that strontium has A more protons. B more protons and neutrons. C 18 and not 8 electrons in its outer shell. D more inner electron shells. (Total for Question 20 = 1 mark) TOTAL FOR SECTION A = 20 MARKS *P48383A0824* 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 />

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