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Question
What is the action of the following reagents on ethyl amine?
Nitrous acid
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Solution
Ethyl amine on reaction with nitrous acid forms ethyl diazonium salts as very unstable intermediate which decomposes immediately by reaction with solvent water to give ethanol.
\[\ce{\underset{Ethyl amine}{C2H5 - NH2} + HNO2 ->[273-278 K][(NaNO2 + HCl)] \underset{Ethyl diazonium chloride}{[C2H5 - \overset{⊕}{N2}Cl^⊖]} ->[H2O] \underset{Ethanol}{C2H5 - OH} + N2 ↑ + HCl}\]
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