Determine the heat of reaction for the oxidation of iron, 4 Fe(s) + 3 O2(g)  2 Fe2O3(s) given the thermochemical equations below. 2 Fe(s) + 6 H2O(l)  2 Fe(OH)3(s) + 3 H2(g) DH = +321.8 kJ 2 H2O(l)  2 H2(g) + O2(g) DH = +571.7 kJ Fe2O3(s) + 3 H2O(l)  2 Fe(OH)3(s) DH = +288.6 kJ

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