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The pH of a buffer containing equal mola...

The pH of a buffer containing equal molar concentration of a weak base and its chloride `(K_(b)` weak base `=2 xx 10^(-5) , log 2 =0.3 )` is

A

5

B

9

C

4.7

D

9.3

Text Solution

Verified by Experts

The correct Answer is:
D
`pOH =pK_(b)=-log (2 xx 10^(-5))=5-0.36 =4.70`
Hence `pH=14-4.7 =9.3`
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