Explain double salts and coordination compounds.

(N/A) Both double salts and coordination compounds are formed by the combination of two or more stable compounds in stoichiometric ratios. However,they differ in their behavior in solution.
Double salts,such as carnallite $(KCl \cdot MgCl_2 \cdot 6H_2O)$,Mohr's salt $(FeSO_4 \cdot (NH_4)_2SO_4 \cdot 6H_2O)$,and potash alum $(KAl(SO_4)_2 \cdot 12H_2O)$,dissociate completely into simple ions when dissolved in water.
In contrast,coordination compounds like $K_4[Fe(CN)_6]$ contain complex ions. The complex ion $[Fe(CN)_6]^{4-}$ does not dissociate into $Fe^{2+}$ and $CN^-$ ions in solution.