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The sum of pH and pKb for a certain basi...

The sum of pH and pKb for a certain basic buffer solution is 13. The ratio of the concentration of the base to that of the salts in this buffer is

A

10

B

1

C

0.05

D

0.1

Text Solution

Verified by Experts

The correct Answer is:
D
From `pOH= pK_(b) - log""(["base"])/(["salt"])`
`14-pH = pK_(b) - log"" (["base"])/(["salt"])`
`therefore 14 = pH + pK_(b) - log""(["base"])/(["salt"])`
or `14=13 - log "" (["base"])/(["salt"])`
`log"" (["base"])/(["salt"])= 13-14=-1`
`therefore (["base"])/(["salt"]) = "anti"log (-1) =0.1`
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