To calculate the standard enthalpy change for the reduction of iron III oxide using carbon monoxide as the reducing agent, we first need to write a balanced chemical equation for the reaction:FeO s + 3CO g 2Fe s + 3CO g Next, we need to use Hess's Law, which states that the enthalpy change of a reaction is the sum of the enthalpy changes of formation of the products minus the sum of the enthalpy changes of formation of the reactants.H = Hf products - Hf reactants We are given the standard enthalpy of formation for iron III oxide FeO and carbon monoxide CO . We also need the standard enthalpy of formation for carbon dioxide CO , which is -393.5 kJ/mol. The standard enthalpy of formation for elemental iron Fe is 0 kJ/mol since it is in its standard state.Now, we can plug the values into the equation:H = [2 0 + 3 -393.5 ] - [1 -824.2 + 3 -110.5 ]H = [-1180.5] - [-824.2 - 331.5]H = [-1180.5] - [-1155.7]H = 24.8 kJ/molThe standard enthalpy change for the reduction of iron III oxide using carbon monoxide as the reducing agent is 24.8 kJ/mol.