1.

The hydrolysis constant of the salt with NO_(2)^(-) ion (K_(a) = 4.5 xx 10^(-10) for HNO_(2))

Answer»

`2.22 xx 10^(-5)`
`4.44 xx 10^(-5)`
`2.22 xx 10^(-6)`
`4.44 xx 10^(-2)`

Solution :The HYDROLYSIS CONSTANT of the hydrolysis of SALT of weak acid and strong base
`K_(b) = (K_(w))/(K_(a))`
Hence, hydrolysis constant of salt with `NO_(2)^(-)` ion.
`K_(h) = (1 xx 10^(-14))/(4.5 xx 10^(-10)) = 2.22 xx 10^(-5)`.


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