Zinc carbonate (ZnCO3):
Zinc carbonate takes place in nature as a calamine.Preparation:
Whenever NaHCO3 is added to the Zinc sulphate solution, ZnCO3 is acquired.
ZnSO4 + 2NaHCO3 → ZnCO3 + Na2SO4 + H2O + CO2↑
Properties:
Physical properties:
It is a white powder, and insoluble in water.
Chemical properties:
Action of Heat:
On heating at around 300°C, Zinc carbonate decomposes into Zinc oxide & carbon dioxide
Uses:
1) It is employed in making ointment for curing skin diseases.
2) It is utilized in the preparation of cosmetics.
3) It is employed as a pigment for rubber.
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