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pKa of a weak acid (HA) and pKb of a wea...

`pK_a` of a weak acid (HA) and `pK_b` of a weak base (BOH) are 3.2 and 3.4, respectively. The pH of their salt (AB) solution-

A

7

B

1

C

7.2

D

6.9

Text Solution

Verified by Experts

The pH of the salt prepared from the combination 1 weak acid and weak base is, `pH=7+1/2pK_a-1/2pK_b=7+1/2xx3.2-1/2xx3.4`
`=7+1.6-1.7=6.9`
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