A) carbon monoxide formed is thermodynamically less stable than ferric oxide
B) carbon has a higher affinity towards oxidation than iron
C) free energy change for the formation of carbon dioxide is less negative than that for ferric oxide
D) iron has a higher affinity towards oxygen than carbon
Correct Answer: B
Solution :
Above 983 K, free energy change for the formation of \[\text{CO}{{\text{ }}_{\text{2}}}\]is more negative than that for ferric oxide. Thus, above this temperature, carbon has a higher affinity towards oxidation than iron.
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