Determine ∆H for the following thermochemical equation: Fe2O3(s) + CO(g) → 2FeO(s) + CO2(g); ΔH° = ? Use the following equations to solve for ΔH°. Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g); ∆H = –26.8 kJ FeO(s) + CO(g) → Fe(s) + CO2(g); ∆H = –16.5 kJ –10.3 kJ 22.7 kJ 6.2 kJ 10.3 kJ –43.3 kJ