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Factors Affecting Alpha

If a salt of ...

Question

If a salt of strong acid and weak base hydrolyses appreciably $(C = 0.1 M)$ , which of the following formula is to be used to calculate degree of hydrolysis ' $α$ '?

α = \sqrt{\frac{K_{w}}{K_{a} . C}}

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α = \sqrt{\frac{K_{w}}{K_{b} . C}}

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α = \sqrt{\frac{K_{w}}{K_{a} . K_{b}}}

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None of these

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Solution

The correct option is B $α = \sqrt{\frac{K_{w}}{K_{b} . C}}$

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