Consider the reaction given below: CO(g) + H2O(g) ⇌ CO2(g) + H2(g). Enthalpy data for the reacting species are provided in the table. Calculate the standard enthalpy change for this reaction. Show work.
Substance: CO(g), H2O(g), CO2(g), H2(g)
ΔHf° / kJ mol⁻¹: -110, -242, -394, 0