For the reduction of \( \mathrm{FeO} \) at the temperature correspo...

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For the reduction of \( \mathrm{FeO} \) at the temperature corresponding to point \( \mathrm{D} \), which of the following statements is correct?
(i) \( \Delta G \) value for the overall reduction reaction with carbon monoxide is zero.
(ii) \( \Delta G \) value for the overall reduction reaction with a mixture of \( 1 \mathrm{~mol} \) carbon and 1 mol oxygen is positive.
(iii) \( \Delta G \) value for the overall reduction reaction with a mixture of 2 mol carbon and 1 mol oxygen will be positive.
(iv) \( \Delta G \) value for the overall reduction reaction with carbon monoxide is negative.
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