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Salt of Weak Acid and Strong Base

In hydrolysis...

Question

In hydrolysis of a salt of weak acid and strong base. $A^{-} + H_{2} O ⇌ H A + O H^{-}$ , the hydrolysis constant $(K_{h})$ is equal to:

\frac{K_{w}}{K_{a}}

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\frac{K_{w}}{K_{b}}

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\sqrt{\frac{K_{a}}{C}}

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\frac{K_{w}}{K_{a} \times K_{b}}

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Solution

The correct option is A $\frac{K_{w}}{K_{a}}$
Hydrolysis constant $K_{h} = \frac{K_{w}}{K_{a}}$

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