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How is aliphatic primary amine distingui...

How is aliphatic primary amine distinguished from aromatic primary amine?

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When treated with `HNO_(2)` (`NaNO_(2) + HCl) " at " 0^(@)C`, aliphatic primary amines give alcohols.
`CH_(3)CH_(2)NH_(2) overset(HNO_(2))rarr CH_(3)CH_(2)- overset(+)(N) -= NCl underset(H_(2)O)overset(Delta)rarr CH_(3)CH_(2)OH + N_(2)`. Aromatic primary amines give a stable diazonium salt
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