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NEETChemistryAmines

Compound A (a primary aliphatic amine) reacts with HNO ₂ at 273 K to give a gas B and an organic compound C. Compound D (a primary aromatic amine) reacts with HNO ₂ at 273 K to form a stable salt E. Salt E on warming with water yields an organic compound F. What are the general classes of compounds C and F respectively?

Options

  1. AC is an alcohol and F is a phenol
  2. BC is an alcohol and F is an alcohol
  3. CC is an alkane and F is a phenol
  4. DC is an alcohol and F is an aryl chloride

Correct answer

A. C is an alcohol and F is a phenol

Step-by-step solution

When a primary aliphatic amine (Compound A) reacts with nitrous acid ( HNO ₂ ) at 273 K , it forms a highly unstable aliphatic diazonium salt that immediately decomposes to yield an alcohol (Compound C) and nitrogen gas (Gas B). When a primary aromatic amine (Compound D) reacts with HNO ₂ at 273 K , it undergoes diazotization to form a stable arenediazonium salt (Salt E). Upon warming with water, the arenediazonium salt (Salt E) undergoes hydrolysis to form a phenol (Compound F) and releases nitrogen gas. Thus, C i

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