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The pH of buffer solution containing 4 x...

The pH of buffer solution containing `4 xx 10^(-3)` and 0.4 mole of acetic acid `(pK_(a) = 4.76)` and sodium acetate respectively will be

A

`6.76`

B

`4.76`

C

`2.76`

D

`0.76`

Text Solution

Verified by Experts

The correct Answer is:
A
`pH = pK_(a) + log .(["salt"])/(["acid"]) = 4.76 + log.(0.4)/(4 xx 10^(-3)) = 6.76`
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