Medium
Crystals of copper sulphate are heated in a test tube for some time.
$(a)$ What is the colour of copper sulphate crystals:
$(i)$ before heating, and $(ii)$ after heating?
$(a)$ What is the colour of copper sulphate crystals:
$(i)$ before heating, and $(ii)$ after heating?
(N/A) $(i)$ Before heating, the copper sulphate crystals are blue in colour because they contain water of crystallisation $(CuSO_4 \cdot 5H_2O)$.
$(ii)$ After heating, the crystals lose their water of crystallisation and turn white, forming anhydrous copper sulphate $(CuSO_4)$.
$(ii)$ After heating, the crystals lose their water of crystallisation and turn white, forming anhydrous copper sulphate $(CuSO_4)$.
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