Q. Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid?
A) Phenol
B) Benzaldehyde
C) Butanal
D) Benzoic acid
Explanation
(b)
$A + NaOH \rightarrow$alcohol+acid
Thus, it is Cannizaro reaction. A is thus aldehyde without H at $\alpha$-carbon.
(like $C_{6}H_{5}CHO,\ HCHO$)
$2C_{6}H_{5}CHO + NaOH \rightarrow C_{6}H_{5}CH_{2}OH + C_{6}H_{5}COONa$
benzaldehyde
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.