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KCET 2015 Chemistry Solved Paper
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Question : 13
Total: 60
Copper is extracted from Copper pyrites by heating in a Bessemer converter. The method is based on the principle that
Copper has more affinity for oxygen than Sulphur at high temperature.
Iron has less affinity for oxygen than Sulphur at high temperature.
Copper has less affinity for oxygen than Sulphur at high temperature.
Sulphur has less affinity for oxygen at high temperature.
Validate
Solution:
The reactions involved in the extraction of copper from coper pyrites is
2
C
u
2
S
+
3
O
2
→
2
C
u
2
O
+
2
S
O
2
C
u
2
S
+
2
C
u
2
O
→
6
C
u
+
S
O
2
Therefore, Cu has more affinity for oxygen than sulphur.
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