Hydrolysis of Salts : process of interaction between water and cations / anions or both of salts is called hydrolysis .
The cations ( e . g ., Na + , K + , Ca 2 + , Ba 2 + , etc .) of strong bases and anions ( e . g ., Cl – , Br – , NO 3 – , ClO 4 – etc .) of strong acids simply get hydrated but do not hydrolyses , and therefore the solutions of salts formed from strong acids and bases are neutral i . e ., their pH is 7 .
Salts of weak acid and strong base e . g ., CH3COONa are basic in nature . Salts of strong acid and weak base e . g ., NH4Cl , are acidic
Salts of weak acid and weak base , e . g ., CH3COONH4 . The pH is determined by the formula pH = 7 + ½ ( pKa – pKb )
Solubility product- product of the molar concentrations of the ions in a saturated solution , each concentration term raised to the power equal to the no . of ions produced .