When 1 mole of calcium carbonate (CaCO3) decomposes to form calcium oxide (CaO) and carbon dioxide (CO2) +177.8kJ of heat is absorbed. The equation for this reaction is given below: CaCO3(s) → CaO(s) + CO2(g)Hr = +177.8kJ
The value Hr = +177.8kJ represents the enthalpy of reaction. Provide a definition of the ‘standard enthalpy of reaction’ using this example specifically.
