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The pK(a) of a weak acid, HA, is 4.80. T...

The `pK_(a)` of a weak acid, `HA`, is `4.80`. The `pK_(b)` of a weak base, `BOH`, is `4.78`. The `pH` of an aqueous solution of the corresponding salt, `BA`, will be:

A

`4.79`

B

`7.01`

C

`9.22`

D

`9.58`

Text Solution

Verified by Experts

The correct Answer is:
B
`pK_(a)=4.8 , pK_(b) = 4.78`
`pH = 7+1/2 (pK_(a)-pK_(b))=7+1/2 (4.8 - 4.78)= 7.01 ` .
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