Ionic compounds dissolve in polar solvents with ionization into cations and anions.
The ionized ions are in equilibrium with the un-dissociated molecules.
AxBy ⇌ xAy+ + yBx-
Ionic Solids in Solutions
Strong electrolytes (α ≈100% ionization), Weak electrolytes (α ≈ 10% ionization), Sparingly soluble (α ≈100% ionization)
Example: HCl, NaOH, Salts NH4OH, Organic acids AgCl, BaSO4
Ionization of Weak Electrolytes
In infinite dilution, all electrolytes are fully ionized. In a concentrated solution, weak electrolytes exist in equilibrium with their unionized molecules. Concentrations of the ions are important in many practical situations like acid-base solubility, and conductance of the solution.