coordination compounds 5 Sample Paper with Answer Sheet

Double salts dissociate completely into simple ions when dissolved in water e.g., Mohr

salt, FeSO4 (NH4)2 SO4, 6H2O will dissolve in water and give ferrous, ammonium and

sulphate ions. On the other hand, the complex ions do not completely dissociate into all

constituent ions e.g. K4 [Fe(CN)6] will dissociate to give potassium ions and [Fe(CN)6]4- ions only.