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Calculate the hydrolysis constant of the...

Calculate the hydrolysis constant of the salt containing `NO_(2)^(-)`. Given the `K_(a) " for " HNO_(2) = 4.5 xx 10^(-10)`

A

`2.22 x 10^(-5)`

B

`4.44 xx 10^(-5)`

C

`2.22 xx 10^(-6)`

D

`4.44 xx 10^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
A
The hydrolysis constant of the hydrolysis of salt of weak acid and strong base
`K_(h) = (K_(w))/(K_(a))`
Hence , hydolysis constant of salt with `NO_(2)^(-)` ion .
`K_(h) = (1 xx10^(-14))/(4.5 xx10^(-10)) = 2.22 xx10^(-5)`
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