Question

Formula to calculate pH for Salt of weak acid and weak base.

Answer 1

in this case cation of the salt combine with OH- and anions with H+ , forming a feebly dissociated base and acid respectively .
let be choose a example :-
CH3COO- + NH4+ + H2O = CH3COOH + NH4OH

ph = 1/2{ Pkw + pka - pkb}

if Ka = Kb then PH = 7
if Ka >Kb then PH < 7
if Ka<Kb then PH >7

Answer 2

Answer:

I HOPE THIS ANSWER HELPFUL TO YOU