What is water of crystallisation? Give an example.

1.	What is water of crystallisation? Give an example.
Answer» Water of crystallization is the fixed number of water molecules present in one formula unit of a salt. Or we can say water stoichiometrically bound into crystal. For example, chemical formula of hydrated copper sulphate is CuSO4\xa0· 5H2O Copper sulphate has 5 molecules of water of crystallisation. Sodium carbonate (Na2CO3.10H2O) contains ten molecules of water of crystallisation.

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