Write a balanced equation for the preparation of each of the following salts:
(i) Copper sulphate from Copper carbonate.
(ii) Zinc carbonate from Zinc sulphate.
(i) CuCO3 + H2SO4 ⟶ CuSO4 + H2O + CO2
(ii) ZnSO4 + (NH4)2CO3 ⟶ (NH4)2SO4 + ZnCO3
