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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

6 years ago


Answers : (2)


Dear veluri


Sol: CuFeS2 + O2 → Cu2S + 2FeS + SO2


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

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Badiuddin .

6 years ago

answer is a)Cu2s and FeO

6 years ago

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