Which of the following statements about the advantage of roasting of s – InterviewSolution

1.	Which of the following statements about the advantage of roasting of sulphide ore before reduction is not true ?
Answer» The `DELTA G^(@)` of the SULPHIDE is greater than those of `CS_(2) " and " H_(2)S`. The `DeltaG^(@)` is negative for ROASTING of sulphide ore to oxide. Roasting of sulphide to oxide is thermodynamically feasible Carbon and hydrogen are not SUITABLE reducing agents for metal sulphides. Solution :Both C and `H_(2)` are not suitable for reducing sulphide ore because `Delta_(f)G^(@)` of metal sulphide is more than that of `CS_(2) " and H_(2)S` which will be formed as result of redcution.

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