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A buffer solution is prepared by mixing ...

A buffer solution is prepared by mixing `10ml` of `1.0 M` acetic acid & `20 ml` of `0.5 M` sodium acetate and then diluted to `100ml` with distilled water. If the `pK_(a)` of `CH_(3)COOH` is `4.76`. What is the pH of the buffer solution prepared?

A

3.84

B

4.76

C

4.34

D

5.21

Text Solution

Verified by Experts

The correct Answer is:
B
`p^(H)=p^(ka)+log""(["salt"])/(["acid"])=4.75+log""(20xx0.5)/(10xx1)`
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