Q. When benzoic acid is treated with $PCl_{5}$ at $100^{0}C$, it gives
A) Benzoyl chloride
B) o-chlorobenzoic acid
C) p-chlorobenzoic acid
D) Benzyl chloride
Explanation
(a)
It gives benzoyl chloride $\left( C_{6}H_{5}COCl \right).$
$C_{6}H_{5}COOH + PCl_{5}\overset{100℃\ \ \ \ }{\rightarrow}C_{6}H_{5}COCl + POCl_{3} + HCl$
Benzoyl chloride
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.