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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 percentage hydrolysis of `0.1M` 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
For a salt of weak acid and strong base, degree of hydrolysis ,
`h=sqrt((K_(w))/(K_(a)c))=sqrt((10^(-14))/(1 xx 10^(-5)xx 0.1))`
`=sqrt((10^(-14))/(10^(-6)))=10^(-4)`
`%h=10^(-4)xx100=10^(-2)=0.01%`
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