We are asked to find ΔHrxn for the following reaction: Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g)
Modify the equation in such a way that it adds up to be the target reaction.
Fe2O3(s) → 2 Fe(s) +
3/2 O2(g) -Eqn1 [reversed]
3 CO(g) +
3/2 O2(g) → 3 CO2(g) +3Eqn2 [multiplied by 3]
Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g)
Calculate ΔHrxn for the following reaction: Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g)
Use the following reactions and given ΔH's.
2 Fe(s) + 3/2 O2(g) → Fe2O3(s), ΔH = –824.2 kJ
CO(g) + 1/2 O2(g) → CO2(g), ΔH = –282.7 kJ
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