Metal X is found in nature as its sulphide XS

• Metals & Non-metals (C10)

Metal X is found in nature as its sulphide XS. It is used in the galvanisation of iron articles. Identify the metal X. How will you convert this sulphide ore into the metal? Explain with equations.

Answer

Metal X is Zinc.

The sulphide ore is first heated strongly in supply of oxygen and changed into its oxide. This process is called roasting.

2ZnS + 3O₂ → 2ZnO + 2SO₂

Zinc oxide is then reduced to zinc metal by heating it with carbon. This process is called reduction.

2ZnO + C → 2Zn + CO₂