Question #103280
Define standard enthalpy of formation and describe a method for its direct
determination with the help of an example.
determination with the help of an example.
Expert's answer
The standard enthalpy of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements, with all substances in their standard states.
Example: C(s, graphite) + O2(g) → CO2(g)
The standard enthalpy of formation of CO2(g) can be determined as the enthalpy of combustion of graphite and measured using bomb calorimeter.
