Metals & Non-metals (C10)

How is copper extracted from its sulphide ore? Explain the various steps supported by chemical equations. Draw labelled diagram for the electrolytic refining of copper.

Answer

Sulphide ore of copper is heated in air.

2Cu2S + 3O2 → 2Cu2O + 2SO2

2Cu2O + Cu2S → 6Cu + SO2

Labelled diagram of electrolytic refining of copper