Determine the standard enthalpy of formation of calcium carbonate from the thermochemical equations given below. Ca(OH) 2(s) → CaO(s) + H2O(
)
ΔrH° = 65.2 kJ/mol-rxn
Ca(OH) 2(s) + CO2(g) → CaCO3(s) + H2O(
)
ΔrH° = −113.8 kJ/mol-rxn
C(s) + O2(g) → CO2(g)
ΔrH° = −393.5 kJ/mol-rxn
2 Ca(s) + O2(g) → 2 CaO(s)
ΔrH° = −1270.2 kJ/mol-rxn
A) −1712.3 kJ/mol-rxn
B) −441.8 kJ/mol-rxn
C) −849.6 kJ/mol-rxn
D) −980.6 kJ/mol-rxn
E) −1207.6 kJ/mol-rxn
Correct Answer:
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