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veluri hasita Grade: 12
        

this is the question given Section III paper I of IIT JEE 2010. the key are different from one another


Partial roasting of chalcopyrite produces


a. Cu2S and FeO    b. Cu2O and FeO

7 years ago

Answers : (2)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear veluri


 


Sol: CuFeS2 + O2 → Cu2S + 2FeS + SO2


explanation



The sulphites of copper and iron are partially oxidized
2FeS+ 3O2 ??→2FeO+ 2SO2
  2Cu2 S + 3O2 ??→2Cu2 O + 2SO2


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Badiuddin .

7 years ago
koushik krishna
33 Points
										

answer is a)Cu2s and FeO

6 years ago
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