NTA Abhyas NEET2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice
Formation of metallic copper from the sulphide ore in the normal thermo-metallurgical process essentially involves which one of the following reactions?
Options
- AC u S + 3 2 O 2 → C u O + S O 2 ; C u O + C → C u + C O
- BC u S + 3 2 O 2 → C u O + S O 2 ; 2 C u O + C u S → 3 C u + S O 2
- CC u S + 2 O 2 → C u S O 4 ; C u S O 4 + C u S → 2 C u + 2 S O 2
- DC u s + 3 2 O 2 → C u O + S O 2 ; C u O + C O → C u + C O 2
Correct answer
B. C u S + 3 2 O 2 → C u O + S O 2 ; 2 C u O + C u S → 3 C u + S O 2
Step-by-step solution
The concentration sulphide ore is roasted. During the process of roasting, CuS is partly converted into CuO as show below 2 C u S + 3 O 2 → 2 C u O + 2 S O 2 When the supply of air is cut off, following reaction occurs in the Bessemer converter 2 C u O + C u S → 3 C u + S O 2