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The pK(a) of acetic acid is 4.74 . The ...

The `pK_(a)` of acetic acid is 4.74 . The concentration of `CH_(3)C O O H ` is 0.01 M. The pH of `CH_(3) C O O H` is

A

`8.37`

B

`4.37`

C

`4.74`

D

`0.474`

Text Solution

Verified by Experts

The correct Answer is:
A
`pH = 7+1/2 [pK_(a)+log C] = 7+1/2 [4.74 +log 10^(-2)] `
`= 7 + 1/2 [4.74 -2] = 7+ (2.74)/2 = 8.37 `
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