Laboratory Preparation and Uses of Zinc Carbonate (ZnCO3)

Zinc carbonate occurs in nature as calamine.

Laboratory Preparation:

When NaHCO3 is added to Zinc sulphate solution, ZnCO3 is obtained.

ZnSO₄ + 2NaHCO₃ → ZnCO₃ + Na₂SO₄ + H₂O + CO₂↑

Uses

i) It is used in making ointment for curing skin diseases.

ii) It is used in the preparation of cosmetics.

iii) It is used a pigment for rubber.