Skip to content
CIE Jun 2015 v3 Paper 4 Q2
Answers available below
Show answer
Question
1
2
3
4
5
6
7
8
9
10
![(a) Both chloroalkanes and acyl chlorides react with water, but only acyl chlorides fume in moist air. (i) State which product causes the fumes in this reaction.[1] (ii) Explain why the reactivities of chloroalkanes and acyl chlorides differ.[1] (b) Compound R is a useful intermediate in the synthesis of pharmaceutical compounds. It can be made from compound P by the following route. step 1 step 2 CO2H CO2H COCl COCl step 3 CH3CH2NH2 P, C8H10 step 4 NCH2CH3 Q, C10H9NO2 (i) Suggest structures for the starting material P and the intermediate Q. [2] (ii) Suggest reagents and conditions for the following steps in the above scheme. step 1step 2step 4[3]UCLES 2015 9701/43/M/J/15 [Total: 7] [Turn over<br />](https://learnah.org/wp-content/uploads/2018/08/June_2015_v3_QP_-_Paper_4_CIE_Chemistry_A-level_2.jpg)
![Page 2 Question (a) Cambridge International A LevelMay/June 2015 Mark Scheme Syllabus Paper 9701 43 Marking point Marks 4 2 2 2p ) 2s oxygen: (1s 5 2 2 fluorine: (1s ) 2s 2p (b) (i) F2O / OF2 (ii) (iii) bent or non-linear o values: F2 (c) (i) E o fluorine (has the more positive E so) is more oxidising F = 2.87 V and Cl2 = 1.36 V Cl (ii) redox (iii) Cl F + 2KBrKCl + KF + Br2 (a) (i) hydrogen chloride or HCl (ii) either (RCOCl) has two electron-withdrawing groups / atoms, making the more + / electron deficient or (RCOCl) has an oxygen, making the carbon more + / electron deficient or (RCOCl) has two electron-withdrawing groups, weakening the CCl bond (b) (i) CH3 CH3 NCH2CH3 (ii) step 1: heat with MnO4 / KMnO4 (+ acid or alkali) step 2: PCl3 + heat or SOCl2 or PCl5 step 4: LiAlH4 (in dry ether)Cambridge International Examinations 2015 1 1 [Total: 8] 1 1 1 1 [Total: 7]<br />](https://learnah.org/wp-content/uploads/2018/08/June_2015_v3_MS_-_Paper_4_CIE_Chemistry_A-level_2.jpg)