Question

Illustrate with example, the difference between a double salt and coordination compound.

Answer 1

Double salts are those molecular or addition compounds which exist in a solid state but dissociate into constituents ions when dissolved in water Ex. Mohr salt $FeS{O}_4{\left(N{H}_4\right)}_{2}S{O}_4\cdot 6H_{2}O$.
Coordination compounds are those molecular or addition compounds which retained their identity in aqueous solution and shows property entirely different from their constituent ions. Ex. Potassium ferrocyanide $K_4\left[Fe{\left(CN\right)}_6\right]$.