Question

Explain the various process in the extraction of pure copper from it ore? Give the equation envolved in each case.

Answer 1

Answer:

Roasting of sulphide ore:

2Cu2S(s)+3O2(s) →2Cu2O(s)+2SO2(g)

(b) Reduction of copper (I) oxide with copper (I) sulphide:

2Cu2O+Cu2S→6Cu(s)+SO2(g)

This reaction is known as auto -reduction.

(c)Reaction for electrolytic refining:

At anode : Cu2+(aq)+2e-→Cu(s)

At cathode : Cu(s) →Cu2+(aq)+2e-

Thanks for the question.

Hope it helps you.