Question

the number of water molecules associated with copper sulphate molecule to form crystal is ?​

Answer 1

CuSO4.5H2O........... .

Answer 2

Let us look at the answer:

Explanation:

Certain compounds form crystals only by the addition of few molecules of water of crystallization. washing soda (Na₂CO₃.10H₂O)  green vitriol (FeSO₄.7H₂O)  

The copper sulphate crystals contains 5 molecules of water of crystallization.

CuSO₄.5H₂O which are blue in colour.