(a)[2]
Define what is meant by enthalpy change of formation.
(b(i))[2]
Complete Table 4.1 by writing equations, with the appropriate state symbols, to show: • the standard enthalpy change of formation for $\text{Fe}_2\text{O}_3$ • the standard enthalpy change of formation for $\text{CO}$
(b(ii))[2]
Using the information in Table 4.1, calculate the enthalpy change of reaction, $\Delta H_r$, in $\text{kJ mol}^{-1}$, for reaction 2. Show your working.