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In the Cannizzaro reaction given below: ...

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 carbony1 group

B

the transfer of hydride to the cardony1 group

C

the abstraction of proton from the carboxy,ic acid

D

the deprotonation of `PH-CH_(2)OH`

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The correct Answer is:
B
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