Edexcel Jun 2017 Paper 2 Q13

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13 The fragment with a peak of m/e = 43 is present in the mass spectrum of A CH B CH C CH D CH 3CH(CH3)CH2Br and CH3CBr(CH3)2 3CH2CH2CH2Br and CH3CHBrCH2CH3 3CH2CH2CH2Br and CH3CH(CH3)CH2Br 3CH(CH3)CH2Br and CH3CHBrCH2CH3 (Total for Question 13 = 1 mark) 14 Depending on the conditions, ethanol, CH3CH2OH, can be oxidized to ethanal, CH3CHO, ethanoic acid, CH3COOH or mixture of the two. Mass spectrometry can be used to identify the products. The absence of a fragment ion peak m/e = 45 indicates that A all the product is ethanoic acid. B all the product is ethanal. C none of the ethanol has been oxidized. D the product is a mixture of ethanal and ethanoic acid. (Total for Question 14 = 1 mark) 15 Trichlorofluoromethane, CFCl3, is a greenhouse gas because it A absorbs infrared radiation and forms chlorine free radicals. B absorbs infrared radiation and re -radiates it back to Earth. C absorbs ultraviolet radiation and forms chlorine free radicals. D absorbs ultraviolet radiation and re -radiates it back to Earth. Use this space for rough working. Anything you write in this space will gain no credit. (Total for Question 15 = 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 *P53493A0720* Turn over<br />

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