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FeO (s) + CO (g) = Fe (s) + CO2 (g), k = 0. 435 at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K ?

Correct answer: D. 3.3

  • A. 1.0
  • B. 1.3
  • C. 2.3
  • D. 3.3

Explanation

For FeO + CO ⇌ Fe + CO₂, the equilibrium constant is K = pCO₂/pCO = 0.435 because the solids have unit activity. Reducing one mole produces one mole of CO₂, so the remaining CO is about 2.3 mol and the initial requirement is approximately 3.3 mol.

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