Question

Benzamide can be converted into benzonitrile with

• A. $H_3{O}^{+}$
• B. $O{H}^{-}/H_{2}O$
• C. $KCN$
• D. $P_2{O}_5$

Answer 1

Answer: (D)

With $P_2{O}_5$ benzamide loses a water molecule and gives benzonitrile.
Here, $P_2{O}_5$ is a dehydrating agent.