Which of the following produces nitrogen gas | vedclass

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(D) Primary aliphatic amines $(R-NH_2)$ react with nitrous acid $(HNO_2)$ to form unstable diazonium salts,which decompose in the presence of water to

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$C_2 H_5 NH_2$

Vedclass · Answer

(D) Primary aliphatic amines $(R-NH_2)$ react with nitrous acid $(HNO_2)$ to form unstable diazonium salts,which decompose in the presence of water to release nitrogen gas $(N_2 \uparrow)$.$C_2 H_5 NH_2 + HNO_2$ $\xrightarrow{0-5^{\circ}C} [C_2 H_5 N_2^+ Cl^-]$ $\xrightarrow{H_2 O} C_2 H_5 OH + N_2 \uparrow + HCl$Secondary amines form $N$-nitrosoamines (yellow oily liquids),and tertiary amines form salts with nitrous acid without evolving nitrogen gas.Therefore,$C_2 H_5 NH_2$ (a primary amine) is the correct answer.

Which of the following produces nitrogen gas after the reaction with nitrous acid?

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