Question

How can bromine water distinguish between benzylamine and aniline?

Answer 1

Answer: When we add bromine water to aniline it will form 2,4,6-tribromophenylamine in colourless precipitate where as benzylamine will not give this test.

Answer 2

Answer:

Reaction with bromine water and nitrous oxide can distinguish between benzylamine and aniline

Explanation:

Aniline:

• On addition of the bromine water to the aniline it will react and form 2,4,6-tribromophenylamine .It is colourless.
• Aniline react with nitrous acid gives stable diazonium salt at low temperature .

Benzylamine:

• On addition of the bromine water to the benzylamine will not give any specific test or not give any kind of reaction.
• Benzylamine reacts with nitrous acid to form diazonium salt which is unstable , which in turn give alcohol with the evolution of nitrogen gas.

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