Solubility product: The product of concentrations of ions in saturated solution of an electrolyte at a given temperature is constant and is known as solubility product. For silver chloride, the equilibrium is formulated as follows. Undissolved salt ⇋ ions in solution AgCl(s) = Ag+(aq)+ Cl (aq) K = [Ag+][Cl–]/[AgCl] The concentration of the undissolved salt