question_answer

Carbon cannot reduce \[F{{e}_{2}}C{{O}_{3}}\] to Fe at a temperature below 983 K because

A)  free energy change for the formation of CO is more negative than that of \[F{{e}_{2}}{{O}_{3}}\]

B)  CO is thermodynamically more stable than \[F{{e}_{2}}{{O}_{3}}\]

C)  carbon has higher affinity towards oxygen than iron

D)  iron has higher affinity towards oxygen than carbon

Correct Answer: D

Solution :

                Below 983 K, conversion of iron to ferric oxide is more favourable.