Question

given below are the steps for the extraction of copper for its Ore write the chemical equation of the reaction involved in each case Roasting of copper sulphide reduction of copper oxide from copper sulphide electrolysis electrolytic refining​

Answer 1

Hey!!!

(a) 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-