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Amines (A-level only)

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Question 3

Which of the following correctly lists these nitrogen-containing compounds in order of increasing base strength (weakest base first)?

CH3CONH2,C6H5NH2,NH3,(CH3CH2)2NH \text{CH}_3\text{CONH}_2, \quad \text{C}_6\text{H}_5\text{NH}_2, \quad \text{NH}_3, \quad (\text{CH}_3\text{CH}_2)_2\text{NH} CH3​CONH2​,C6​H5​NH2​,NH3​,(CH3​CH2​)2​NH
A

C6H5NH2<CH3CONH2<NH3<(CH3CH2)2NH\text{C}_6\text{H}_5\text{NH}_2 < \text{CH}_3\text{CONH}_2 < \text{NH}_3 < (\text{CH}_3\text{CH}_2)_2\text{NH}C6​H5​NH2​<CH3​CONH2​<NH3​<(CH3​CH2​)2​NH

B

CH3CONH2<C6H5NH2<NH3<(CH3CH2)2NH\text{CH}_3\text{CONH}_2 < \text{C}_6\text{H}_5\text{NH}_2 < \text{NH}_3 < (\text{CH}_3\text{CH}_2)_2\text{NH}CH3​CONH2​<C6​H5​NH2​<NH3​<(CH3​CH2​)2​NH

C

(CH3CH2)2NH<NH3<C6H5NH2<CH3CONH2(\text{CH}_3\text{CH}_2)_2\text{NH} < \text{NH}_3 < \text{C}_6\text{H}_5\text{NH}_2 < \text{CH}_3\text{CONH}_2(CH3​CH2​)2​NH<NH3​<C6​H5​NH2​<CH3​CONH2​

D

CH3CONH2<(CH3CH2)2NH<NH3<C6H5NH2\text{CH}_3\text{CONH}_2 < (\text{CH}_3\text{CH}_2)_2\text{NH} < \text{NH}_3 < \text{C}_6\text{H}_5\text{NH}_2CH3​CONH2​<(CH3​CH2​)2​NH<NH3​<C6​H5​NH2​

Markscheme

Amines (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Amines (A-level only)

26 exam-style questions on AQA A Level Chemistry Amines (A-level only), covering Preparation (A-level only), Base properties (A-level only), and Nucleophilic properties (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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