Purification And Characterisation Of Organic Compounds Question 182

Question: In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:

Options:

A) Copper (I) sulphide $ (Cu_2S) $

B) Sulphur dioxide $ ( SO_2 ) $

C) Iron sulphide $ ( FeS ) $

D) Carbon monoxide (CO)

Show Answer

Answer:

Correct Answer: A

Solution:

Cuprous oxide formed during roasting of cuprous sulphide is mixed with few amount of cuprous sulphide and heated in a reverberatory furnace to get metallic copper.

$ 2Cu_2O+Cu_2S\to 6Cu+SO_2 $