Question

Difference between double salt and complex compounds.

Answer 1

Double Salt:
1. These exit only in solid state and dissociate into constituent species in their solution.
2. They lose their identity in dissolved state.
3. In double salt the metal atom/ion exhibit normal valancy.
Complex compound:
1. They retain their identity in solid as well as in solution state.
2. They do not lose their identity in dissolved state.
3. In co-ordination compounds, the number negative ions or molecules surroundings the central metal atom is beyond its normal valency.