Calculate the ΔH°rxn for the decomposition of calcium carbonate to calcium oxide and carbon dioxide.
ΔH°f [CaCO3(s)] = −1206.9 kJ/mol;
ΔH°f [CaO(s)] = −635.1 kJ/mol;
ΔH°f [CO2(g)] = −393.5 kJ/mol
CaCO3(s) → CaO(s) + CO2(g)
Multiple Choice
178.3 kJ
−1448.5 kJ
2235.5 kJ
−2235.5 kJ
−178.3 kJ