Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?
A. ∆Gf° of sulphide is greater than those for CS2 and H2S.
B. ∆Gr° is negative for roasting of sulphide ore to oxide.
C. Roasting of the sulphide to its oxide is thermodynamically feasible.
D. Carbon and hydrogen are suitable reducing agents for metal sulphides.
Answer:D
Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?
A. ∆Gf° of sulphide is greater than those for CS2 and H2S. B. ∆Gr° is negative for roasting of sulphide ore to oxide. C. Roasting of the sulphide to its oxide is thermodynamically feasible. D. Carbon and hydrogen are suitable reducing agents for metal sulphides.