A weak acid HX has K_(a) =1 xx 10^(-5)M. If forms a salt NaX onreaction with alkali. The perentage degree of dissociation of 0.1 M solution of NaX is

A weak acid HX has K_(a) =1 xx 10^(-5)M. If forms a salt NaX onreactio

1.	A weak acid HX has K_(a) =1 xx 10^(-5)M. If forms a salt NaX onreaction with alkali. The perentage degree of dissociation of 0.1 M solution of NaX is
Answer» 1.0E-5 0.01 0.1 0.15 Solution :`underset(("Salt"))(X^(-)) +H_(2)O hArr HX+OH^(-)` For the salt `K_(h) =(K_(w))/(K_(a)) =Calpha^(2)` `:. (10^(-4))/(10^(-5)) =0.1 alpha^(2)` `" or """alpha^(2) =(10^(-14))/(10^(-6)) =10^(-8)` `alpha =(10^(-8))^(1//2) =10^(-4)` `% " degree of DISSOCIATION "underset(=10^(-2) =0.01%)(=10^(-4) XX 100)`