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67. Determine AGº for the reaction: Fe2O3(s) + 3 CO(g) – 2 Fe(s) + 3 C02(3) Use the following reactions with known AGixn values: 2 Fe(s) + O2(8) ► Fe2O3(s) AGPx = -742.2 kJ CO(g) + O2(8) CO2(3) AGX = -257.2 kJ

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68. Calculate AG xn for the reaction: CaCO3(S) + CaO(s) + CO2(g) Use the following reactions and given AGixn values: Ca(s) + CO2(g) + O2(9) — CaCO3(s) AGixn = -734.4 kJ 2 Ca(s) + O2(g) – 2 Cao(s) AGix = -1206.6 kJ

Given the following reactions

Fe2O3(s) + 3 CO(g) â 2 Fe(s) + 3 CO2(g) ÎH = â28.0 kJ

3Fe(s) + 4CO2(g) â 4CO(g) + Fe3O4(s) ÎH = +12.5 kJ

3 Fe2O3(s) + CO(g) â CO2(g) + 2 Fe3O4(s)

the enthalpy of the reaction of Fe2O3 with CO is which of the following?

Calculate ÎG^o in kJ for the following reaction:

2Fe₂O₃(s) + 3C(s) â 4Fe(s) + 3CO₂(g)

ÎG_f^o(Fe₂O₃(s)) = -742.2 kJ/mol
ÎG_f^o(C(s)) = ?
ÎG_f^o(Fe(s)) = ?
ÎG_f^o(CO₂(g)) = -394.4 kJ/mol

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67. Determine AGº for the reaction: Fe2O3(s) + 3 CO(g) – 2 Fe(s) + 3 C02(3) Use the following reactions with known AGixn values: 2 Fe(s) + O2(8) ► Fe2O3(s) AGPx = -742.2 kJ CO(g) + O2(8) CO2(3) AGX = -257.2 kJ

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