The provisions of the theory of electrolytic dissociation.

In an aqueous solution, electrolyte molecules undergo spontaneous dissociation with the formation of positive and negative ions.
Ionization level = Dissociation number of molecules / Total number of electron molecules before dissociation.
At moderate concentrations, there is an equilibrium between ions and undissociated molecules. This equilibrium state is called ionic equilibrium.
Each ion behaves osmotically like a molecule.