For the reduction of FeO at the temperature corresponding

For the reduction of FeO at the temperature corresponding to point D, which

of the following statements is correct?

(i) ∆G value for the overall reduction reaction with carbon monoxide is

zero.

(ii) ∆G value for the overall reduction reaction with a mixture of 1 mol carbon

and 1 mol oxygen is positive.

(iii) ∆G value for the overall reduction reaction with a mixture of 2 mol carbon

and 1 mol oxygen will be positive.

(iv) ∆G value for the overall reduction reaction with carbon monoxide is

negative.