NEET2007ChemistryGeneral Organic ChemistryActual
Which of the following amines will not give ( N ₂ ) gas on treatment with nitrous acid ( ( NaNO ₂+ . ) ( HCl ) ) ?
Options
- A( C ₂ H ₅ NH ₂ )
- B( CH ₃ NH ₂ )
- C( ( CH ₃ )₂ CH - NH ₂ )
- DAll will give ( N ₂ ).
Correct answer
D. All will give ( N ₂ ).
Step-by-step solution
All aliphatic primary amines liberate ( N ₂ ) gas on treatment with ( HNO ₂ ). (R- NH ₂+ HONO 273-278 ~K R- OH + N ₂+ H ₂ O ) Since no other class of amines liberate ( N ₂ ) gas on treatment with ( HNO ₂ ), this reaction is used as a test for aliphatic primary amines.