Question

How is lattice energy of an ionic compound related with its solubility
in polar solvent ?

Answer 1

Solubilities of Ionic Substances in Liquids. Ionic substances are generally most soluble in polar solvents; the higher the lattice energy, the more polar the solvent must be to overcome the lattice energy and dissolve the substance. Because of its high polarity, water is the most common solvent for ionic compounds.