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प्रश्न
Write the preparation reactions for acid amide from the following.
Carboxylic acid
उत्तर
Carboxylic acids react with ammonia to form ammonium carboxylate salt which on further strong heating at high temperature decomposes to give acid amide.
\[\begin{array}{cc}
\phantom{}\ce{O}\phantom{......==.............}\ce{O}\phantom{........................}\ce{O}\phantom{...}\\
\phantom{}||\phantom{.......................}||\phantom{.........................}||\phantom{...}\\
\ce{\underset{\text{Carboxylic acid}}{R - C - OH} + NH3 ⇌ \underset{\text{Ammonium carboxylate}}{R - C - O- - NH^+_4} ->[\Delta][-H2O] \underset{\text{Acid amide}}{R - C - NH2}}
\end{array}\]
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