Question

Select the compound which on treatment with nitrous acid liberates nitrogen.

Options

• Nitroethane 

• Triethylarnine

• Diethylarnine 

• Ethylarnine

Answer 1

Ethylarnine

Explanation:

Ethylamine (C₂H₅NH₂) is a primary amine. Hence, liberates nitrogen on treatment with nitrous acid.

\[\ce{C2H5NH2 + HNO2 ->[NaNO2 + HCl] C2H5 - \overset{+}{N}\underset{Diazonium chloride}{≡ N\bar{\text{C}}l} ->[H2O] C2H5 OH + N2\uparrow + HCl}\]