Benzylamine (C_6H_5CH_2NH_2) and aniline (C_6 | vedclass

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(C) Aniline is a primary aromatic amine,while benzylamine is a primary aliphatic amine.$1$. Dye-azo test: Aniline reacts with nitrous acid $(HNO_2)$ a

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Dye-azo test

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(C) Aniline is a primary aromatic amine,while benzylamine is a primary aliphatic amine.$1$. Dye-azo test: Aniline reacts with nitrous acid $(HNO_2)$ at $0-5 \ ^\circ C$ to form a benzene diazonium salt,which then couples with $\beta$-naphthol to give an orange-red dye.$2$. Benzylamine reacts with nitrous acid to form a diazonium salt,but it is highly unstable and decomposes immediately to form benzyl alcohol and nitrogen gas.$3$. Therefore,the dye-azo test is the standard chemical method to distinguish between primary aromatic and aliphatic amines.

Benzylamine $(C_6H_5CH_2NH_2)$ and aniline $(C_6H_5NH_2)$ can be distinguished by:

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