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Chemistry
The correct relation of pH of salt of weak acid and weak base
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Q. The correct relation of pH of salt of weak acid and weak base
A
$pH = 7 + \frac {1}{2}[pK_b +logC]$
B
$pH = 7 + \frac {1}{2}[pK_b -logC]$
C
$pH = -\frac {1}{2} [logK_a+logK_w-logK_b]$
D
$pH = -\frac {1}{2} [logK_w+logK_b-logC]$
Solution:
Correct answer is (c) $pH = -\frac {1}{2} [logK_a+logK_w-logK_b]$