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(A) Primary aliphatic amines $(R-NH_2)$ react with nitrous acid $(HNO_2)$ to form unstable diazonium salts,which decompose to evolve $N_2$ gas and for

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Ethylamine

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(A) Primary aliphatic amines $(R-NH_2)$ react with nitrous acid $(HNO_2)$ to form unstable diazonium salts,which decompose to evolve $N_2$ gas and form alcohols $(R-OH)$.For ethylamine: $CH_3CH_2NH_2 + HNO_2 	o CH_3CH_2OH + N_2 + H_2O$.Aniline $(C_6H_5NH_2)$ forms a stable benzene diazonium salt at low temperatures $(0-5 \ ^\circ C)$.Secondary amines $(R_2NH)$ react with $HNO_2$ to form $N$-nitrosoamines (yellow oily liquids).Tertiary amines $(R_3N)$ form salts with $HNO_2$.

Which of the following compounds reacts with $HNO_2$ to form an alcohol?

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