Question

By which method conversion of ZnS and ZnCo₃ into ZnO can be carried out? Explain writing chemical equation. Answer the given question.

Answer 1

ZnS can be converted into ZnO by heating it in the Presence of the Oxygen at high temperature. Scientific Terms for that is Roasting.

∴ 2ZnS + 3O₂ -----400° C-----→ 2ZnO + 2SO₂

This method is only for Sulphide Ore, ZnS is the Sulphide ore, thus it undergoes Roasting.

ZnCO₃ can be converted into ZnO by heating it at high temperature in absence of the Oxygen. The Scientific term for that is Calcification.

ZnCO₃ ------------→ ZnO + CO₂.

Only carbonate ores can undergoes Calcination.

ZnCO₃ is the carbonate ore therefore it undergoes calcination.

Hope it helps.