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.