Question: what is the standard enthalpy of formation of baco3?
Answer: Question: What Is The Standard Enthalpy Of Formation Of BaCO3 (s)? BaO (s) + CO2 (g) --> BaCO3 (s) Enthaply Change = -269.3 KJ/mol-rxn Substance Enthalpy Change (kJ/mol-rxn) BaO (s) -553.5 CO2 (g) -393.5.