Statement 1: The solubility of salts of weak acid and strong base increases with increase in pH.Statement 2: At lower pH, equilibrium shifts in forward direction in the ionization of salt of weak acid and strong base

S=KSPH++KaKa12Thus solubility ‘S’ increase with increase in H+ or ↓ in pH;Alternate method;Na3PO4⇌3Na++PO4-3; At lower pH, the H+ added removes phosphate ion to form a weak acid; Equilibrium shifts in forward direction