The Total solution for NCERT class 6-12
The ionization constant of nitrous acid is4.5 ├Ч 10тАУ4. Calculate the pH of 0.04 M sodium nitritesolution and also its degree of hydrolysis.
NaNO2┬аis the salt of astrong base (NaOH) and a weak acid (HNO2).
Now, If┬аx┬аmoles of the saltundergo hydrolysis, then the concentration of various species present in thesolution will be:
Therefore,degree of hydrolysis
=2.325 ├Ч 10тАУ5