2:06 minutes
Problem 80
Textbook Question

Calculate ΔHrxn for the 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

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