Question: Given that Gf (Fe2O3) = - 741.0 kJ/mol and that Gf (Al2O3) = - 1576.4 kJ/mol, calculate G for the following reactions at 25C: (a)

Given that ΔG°f (Fe2O3) = - 741.0 kJ/mol and that ΔG°f (Al2O3) = - 1576.4 kJ/mol, calculate ΔG° for the following reactions at 25°C:
(a) 2Fe2O3(s) → 4Fe(s) + 3O2(g)
(b) 2Al2O3(s) → 4Al(s) + 3O2(g)

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