Set up a thermodynamic cycle for determining the enthalpy of hydration of Mg²⁺ ions using the following data: enthalpy of sublimation of Mg(s), +167.2 kJ mol⁻¹; first and second ionization enthalpies of Mg(g), 7.646 eV and 15.035 eV; dissociation enthalpy of Cl2(g), +241.6 kJ mol⁻¹; electron gain enthalpy of Cl(g), −3.78 eV; enthalpy of solution of MgCl₂(s), −150.5 kJ mol⁻¹; enthalpy of hydration of Cl⁻(g), −383.7 kJ mol⁻¹.