Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true gt

Options

A. `Delta_(f) G^(Ө)` of the sulphide is greater than `CS_(2)` and `H_(2)S`.
B. `Delta_(f) G^(Ө)` is negative for roasting of sulphide ore to oxide
C. Roasting of the sulphide to oxide is thermodynamically feasible
D. Carbon and hydrogen are suitable reducing agents for metal sulphides.

Answer

D

Explanation

`Delta_(f) G^(Ө)` for sulphides `gt Delta_(f)G^(Ө)` for `CS_(2)` and `H_(2)S` and thus `C` and `H_(2)` cannot reduce metal sulphide.