Define enthalpy change of hydration.

23.2.1 define and use the term enthalpy change with reference to hydration,

23.2.2 construct and use an energy cycle involving enthalpy change of solution, lattice energy and enthalpy change of hydration

23.2.3 carry out calculations involving the energy cycles in 23.2.2

23.2.4 explain, in qualitative terms, the effect of ionic charge and of ionic radius on the numerical magnitude of an enthalpy change of hydration