Question

In the extraction of copper from its sulphide ore, the metal is formed by the
reduction of Cu2O with
(i) FeS
(ii) CO
(iii) Cu2S
(iv) SO2


NCERT Class XII
Chemistry - Exemplar Problems

Chapter 6. General Principles and Processes of Isolation of Elements

Answer 1

(iii) Cu₂S is the correct option.

Answer 2

Hello Dear,

● Answer -

(iii) Cu2S (copper sulphide)

◆ Explaination -

Copper is usually extracted from its sulphide & oxide ores.

Cu2O (copper oxide) is reduced to Cu (copper) by its reaction with Cu2S (copper sulphide).

2Cu2O + Cu2S --> 6Cu + SO2

SO2 gas is formed during this reaction & have to be safely removed from the reactor.

Hope this helps you. Keep asking questions bud..