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A weak acid HX has the dissociation cons...

A weak acid HX has the dissociation constant `1 xx 10^(-5)`. M. It forms a salt NaX on reaction with alkali. The degree of hydrolysis of 0.1 M solution of NaX is

A

`0.0001%`

B

`0.01%`

C

`0.1%`

D

`0.15%`

Text Solution

Verified by Experts

The correct Answer is:
B
`X^(-)+H_(2)O hArr HX+OH^(-)`
`K_(h)=(10^(-14))/(10^(-5))" so " h=sqrt((10^(-9))10^(-1))=10^(-4)`
`100xx10^(-4)=10^(-2)`
so % of hydrolysis `=0.01%`
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