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A certain buffer solution contains equal...

A certain buffer solution contains equal concentration of `X^-` and HX. The` K_a ` for HX is `10^(-8)` The pH of the buffer is

A

5

B

8

C

6

D

14

Text Solution

Verified by Experts

The correct Answer is:
B
For acidic buffer
`pH =pK_a +log ("[Salt]")/(["Acid"])`
` :. ["salt"]=["Acid"]`
` therefore pH = pK_a =- log 10^(-8) =8`
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