The idea of using an energy cycle to solve problems involving Hess"s Law has already been introduced in sub-topic 5.2 Hess"s Law. This Higher Level sub-topic involves the use of energy cycles that contain the lattice enthalpy and or enthalpies of hydration and solution. A Born-Haber cycle is simply a special case of Hess’s Law. It refers to the enthalpy change of formation of an ionic compound. It can either proceed...