Question

In the Cannizzaro reaction given below:
`2Ph-CHO overset(overset(Θ)OH)rarrPh-CH_(2)OH+PhCO_(2)^(-)` the slowest step is:
A. the attack of `.^(-) OH` at the carbonyl group.
B. the transfer of hydride to the carbonyl group.
C. the abstraction of proton from the carboxylic acid.
D. the deprotonation of `Ph CH_(2) OH`.

Answer 1

Correct Answer - B
The possible mechanism is
The showest stop is the transfer of hydride to the carbonyl ground as shown in stop (ii).