Step-by-step explanation:
In the formation of an ionic crystal, several enthalpy changes are involved. These include:
Lattice energy: The energy released when gaseous ions come together to form a solid ionic compound.
Ionization energy: The energy required to remove an electron from an atom or ion in the gas phase.
Electron affinity: The energy released when an electron is added to an atom or ion in the gas phase.
Hydration energy: The energy released when an ion is surrounded by water molecules in solution.
Heat of solution: The energy absorbed or released when a solute dissolves in a solvent.
Overall, the formation of an ionic crystal involves a complex interplay of these different enthalpy changes. The strength of the forces holding the ions together in the crystal lattice depends on the balance between these different energy contributions.