What is Acid leaching? – InterviewSolution

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1.

What is Acid leaching?

Answer»

Leaching of sulphide ores such as ZnS, PbS etc,, can be done by treating them with hot aqueous sulphuric acid.

2ZnS(s) + 2H₂SO₄ (aq) + O₂ (g) → 2ZnSO₄ (aq) + 2S (s) + H₂O

In this process the insoluble sulphide is converted into soluble sulphate and elemental sulphur.

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