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pK(a) of a weak acid is 5.76 and pK(b) o...

`pK_(a)` of a weak acid is 5.76 and `pK_(b)` of a weak base is 5.25. What will be the pH of the salt formed by the two ?

A

7.255

B

7.005

C

10.225

D

4.255

Text Solution

Verified by Experts

The correct Answer is:
A
`pH=(1)/(2)[pK_(w)+pK_(a)-pK_(b)]`
`pH=7+(1)/(2)(5.76-5.25)=7.255`
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