Solubility is the concentration of solute in a saturated solution at a given temperature. The molar solubility would be the number of moles of solute required to form one litre of a. saturated solution at a specified temperature; i.e., the maximum molar concentration of a solute. molar solubility = C (saturated solution) = n / v M = mol/L. Example: A saturated solution produced by dissolving hydrogen chloride gas in water is.