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The standard enthalpy of formation of hematite, Fe2O3(s), is –825.5 kJ mol-1. What is the standard eThermodynamics Chemistry Question

Question

The standard enthalpy of formation of hematite, Fe2O3(s), is –825.5 kJ mol-1. What is the standard enthalpy of reaction for the reduction of hematite with carbon monoxide to give metallic iron as shown below?
CO(g) + 1/2 O2(g) → CO2(g) ∆H°rxn = –283.0 kJ mol-1
Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g) ∆H°rxn = ???

A.

–23.5 kJ mol-1

✓ Correct
B.

–542.5 kJ mol-1

C.

–849.0 kJ mol-1

D.

–1674.5 kJ mol-1

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