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KCET2011ChemistryGeneral Principles and Processes of Isolation of Metals

Carbon cannot reduce Fe ₂ O ₃ to Fe at a temperature below 983 ~K because

Options

  1. Afree energy change for the formation of CO is more negative than that of Fe ₂ O ₃
  2. BCO is thermodynamically more stable than Fe ₂ O ₃
  3. Ccarbon has higher affinity towards oxygen than iron
  4. Diron has higher affinity towards oxygen than carbon

Correct answer

D. iron has higher affinity towards oxygen than carbon

Step-by-step solution

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

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