Question

Fe2O3 + 3CO -----> 2Fe + 3CO2
FeO + CO ------> Fe + CO2
ΔH1= -26kJ
ΔH2= -16kJ
find ΔH
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Answer 1

Explanation:

Fe2O3 (s) + 3 CO (g) → 2 Fe (s) + 3 CO2 (g) ΔHO = -23.4 kJ

3 Fe2O3 (s) + CO (g) → 2 Fe3O4 (s) + CO2 (g) ΔHO = -48.3 kJ

Fe3O4 (s) + CO (g) → 3 FeO (s) + CO2 (g) ΔHO = +21.8 kJ

Use Hess’s law to calculate ΔHO for the reaction:

FeO (s) + CO (g) → Fe (s) + CO2 (g)