Determine the Standard Enthalpy of Formation of Calcium Carbonate from the Thermochemical

Multiple Choice

Determine the standard enthalpy of formation of calcium carbonate from the thermochemical equations given below. Ca(OH) ₂(s) → CaO(s) + H₂O( )
Δ_rH° = 65.2 kJ/mol-rxn
Ca(OH) ₂(s) + CO₂(g) → CaCO₃(s) + H₂O( )
Δ_rH° = −113.8 kJ/mol-rxn
C(s) + O₂(g) → CO₂(g)
Δ_rH° = −393.5 kJ/mol-rxn
2 Ca(s) + O₂(g) → 2 CaO(s)
Δ_rH° = −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