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Solution: Calculate ΔHrxn for the following reaction: CaO(s) + CO2(g) → CaCO3(s)Use the following reactions and given ΔH’s:Ca(s) + CO2(g) + 1/2 O2(g) → CaCO3(s); ΔH = –812.8 kJ2 Ca(s) + O2(g) → 2 CaO(s); ΔH = –1269.8 kJ

Problem

Calculate ΔHrxn for the following reaction: CaO(s) + CO2(g) → CaCO3(s)

Use the following reactions and given ΔH’s:
Ca(s) + CO2(g) + 1/2 O2(g) → CaCO3(s); ΔH = –812.8 kJ
2 Ca(s) + O2(g) → 2 CaO(s); ΔH = –1269.8 kJ