Edexcel Jan 2017 (IAL) Paper 4 Q17 (with explained solutions) |

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Edexcel Jan 2017 (IAL) Paper 4 Q17

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15 The ester can be made by reacting A ethanoic acid with 2-methylbutan-2-ol. B propanoic acid with 2-methylbutan-2-ol. C ethanoic acid with 3-methylbutan-2-ol. D propanoic acid with 3-methylbutan-2-ol. (Total for Question 15 = 1 mark) 16 Propanoic acid can be obtained by the A oxidation of propanone with potassium dichromate(VI) and sulfuric acid. reduction of propanal with lithium tetrahydridoaluminate(III). C hydrolysis of methyl propanoate with hydrochloric acid. D hydrolysis of propyl methanoate with hydrochloric acid. (Total for Question 16 = 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 17 Which pair of compounds can be easily distinguished by their infrared spectra outside the fingerprint region? A C 2H4 from C2H6 B C 4H10 from C5H12 C CH3CH2CH2OH from CH3CH(OH)CH3 D CH 3COOC2H5 from C2H5COOCH3 Use this space for any rough working. Anything you write in this space will gain no credit. (Total for Question 17 = 1 mark) I E T I R W T O N O D *P48372RA0728* Turn over<br />

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Correct Answer A B C D Propanone cannot be oxidised to an acid Reduction of propanal would form an alcohol Correct The acid produced would be methanoic Correct Answer A B C D Correct Both compounds contain C-C and C-H bonds only Both compounds contain C-C ,C-H, C-O and O-H bonds only Both compounds contain C-C, C-H, C-O and C=O bonds only Correct Answer A It is carried out at temperatures where samples have been vaporised It cannot be used if the samples have decomposed It a cannot be used if the samples cannot be vaporised Correct B C D A B C D Correct Answer C2H2Cl would have mass 61 with these isotopes C2H2Cl would have mass 65 with these isotopes C2H2Cl would have mass 65 with these isotopes Correct Correct Answer A B C D Correct No peak at 1700-1680 cm-1 for a ketone No peak at 3750-3200 cm-1 for an alcohol Alkane would not have a peak at 1750 cm-1 Mark Mark Mark Mark Mark Question Number 16 Question Number 17 Question Number 18 Question Number 19 Question Number 20<br />

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