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CaCO3 (s) → Ca (s) + CO2 (g) + ½ O2 (g) ΔG°rxn = 734.4 kJ
Ca (s) + ½ O2 (g) → CaO (s) ΔG°rxn = - 603.3 kJ
Calculate ΔG˚rxn for the reaction: CaCO3(s) → CaO(s) + CO2(g)
Use the following reactions and given ΔG˚rxn values:
Ca(s) + CO2(g) + 1/2 O2(g) → CaCO3(s), ΔG˚rxn = –734.4 kJ
2 Ca(s) + O2(g) → 2 CaO(s), ΔG˚rxn = –1206.6 kJ
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