Carbon cannot reduce \( \mathrm{Fe}_{2} \mathrm{O}_{3} \) to \( \mathrm{Fe} \) at a temperature ...

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Carbon cannot reduce \( \mathrm{Fe}_{2} \mathrm{O}_{3} \) to \( \mathrm{Fe} \) at a temperature below \( 983 \mathrm{~K} \) because :
(Karnataka CET 2011)
\( P \)
(a) free energy change for the formation of \( \mathrm{CO} \) is more negative than that of \( \mathrm{Fe}_{2} \mathrm{O}_{3} \)
W.
(b) \( \mathrm{CO} \) is therinudynamically more stable than \( \mathrm{Fe}_{2} \mathrm{O}_{3} \)
(c) carbon has higher affinity towards oxygen than iron
(d) iron has higher affinity towards oxygen than carbon
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