Question

vi. What is meant by ̳Water of Crystallisation‘ of a substance? Describe an activity to
show that.

Answer 1

Water of Crystallization is the fixed no. of molecules which are present in one formula unit of salt. Activity- Aim-To show the water of crystallization Materials required-Copper sulphate,Bunsen Burner,China dish. Procedure-Put some copper sulphate crystals on china dish and heat it with Bunsen burner. Observation-The blue colour crystals of Copper sulphate changes to white powder on removal of 5 molecules of water of crystallization. Equation-CuSO₄.5H₂O⇒CuSO₄ Conclusion-This shows water of crystallization.