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Carboxylic acids and derivatives (A-level only)

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Question 10

Which of the following reactions proceeds via a nucleophilic addition-elimination mechanism?

A
C6H6+CH3COCl→AlCl3C6H5COCH3+HCl \text{C}_6\text{H}_6 + \text{CH}_3\text{COCl} \xrightarrow{\text{AlCl}_3} \text{C}_6\text{H}_5\text{COCH}_3 + \text{HCl} C6​H6​+CH3​COClAlCl3​​C6​H5​COCH3​+HCl
B
CH3CHO+HCN→CH3CH(OH)CN \text{CH}_3\text{CHO} + \text{HCN} \rightarrow \text{CH}_3\text{CH(OH)CN} CH3​CHO+HCN→CH3​CH(OH)CN
C
(CH3CO)2O+CH3NH2→CH3CONHCH3+CH3COOH (\text{CH}_3\text{CO})_2\text{O} + \text{CH}_3\text{NH}_2 \rightarrow \text{CH}_3\text{CONHCH}_3 + \text{CH}_3\text{COOH} (CH3​CO)2​O+CH3​NH2​→CH3​CONHCH3​+CH3​COOH
D
CH3CH2Cl+2NH3→CH3CH2NH2+NH4Cl \text{CH}_3\text{CH}_2\text{Cl} + 2\text{NH}_3 \rightarrow \text{CH}_3\text{CH}_2\text{NH}_2 + \text{NH}_4\text{Cl} CH3​CH2​Cl+2NH3​→CH3​CH2​NH2​+NH4​Cl
Markscheme

Carboxylic acids and derivatives (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Carboxylic acids and derivatives (A-level only)

22 exam-style questions on AQA A Level Chemistry Carboxylic acids and derivatives (A-level only), covering Carboxylic acids and esters (A-level only) and Acylation (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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