Question

How is copper obtained from copper glance

Answer 1

Hi 
In order to extract copper , steps involved :

1. Roasting of copper sulphide
2. Reduction of copper oxide 
3. Electrolytic refining 

1. Roasting of copper sulphide 

2Cu₂S + 3O₂ → 2Cu₂O + 2SO₄

2.Reduction of copper oxide 

2Cu₂O + Cu₂S → 6Cu + SO₂

3. Electrolytic  refining 

At positive electrode , impure copper dissolves 

Cu(s)  →Cu²⁺ (aq) + 2e⁻

At negative electrode , pure copper deposits 

Cu²⁺(aq) + 2e⁻ → Cu(s)