CH3COOK is a salt of weak acid (CH3COOH) and strong base (KOH). FeCl3 is a salt of weak base [Fe(OH)3] and strong acid (HCl). Pb(CH3COO)2, is a salt of weak base Pb(OH)2 and weak acid(CH3COOH) Al(CN)3 is a salt of weak base [Al(OH)3] and weak acid (HCN).