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  Zinc carbonate

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↑

2252_Zinc carbonate.jpg

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

1365_Zinc carbonate2.jpg

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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