Carbylamine Reaction
Easychemistry
Carbylamine reaction is used to test for:
Select the correct option:
Solution
Incorrect! Answer:
Primary amines
The Carbylamine Test (or Isocyanide Test) is extremely specific for Primary (1∘) Amines, both aliphatic and aromatic.
- Reaction: R−NH2+CHCl3+3KOH(alc)ΔR−NC+3KCl+3H2O
- Observation: The formation of an Alkyl Isocyanide (R−NC) which has an intensely foul or unpleasant smell.
- Secondary and tertiary amines do not contain the necessary two hydrogen atoms on the nitrogen to form the isocyanide and thus do not give this test.
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About This Question
- Subject
- chemistry
- Chapter
- organic compounds containing nitrogen
- Topic
- carbylamine reaction
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Primary amines
The Carbylamine Test (or Isocyanide Test) is extremely specific for Primary (1∘) Amines, both aliphatic and aromatic.
- Reaction: R−NH2+CHCl3+3KOH(alc)ΔR−NC+3KCl+3H2O
- Observation: The formation of an Alkyl Isocyanide (R−NC) which has an intensely foul or unpleasant smell.
- Secondary and tertiary amines do not contain the necessary two hydrogen atoms on the nitrogen to form the isocyanide and thus do not give this test.
This easy difficulty chemistry question is from the chapter organic compounds containing nitrogen, covering the topic of carbylamine reaction. It appeared in the 2025 exam.
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