<P> The phenomenon of freezing - point depression is analogous to boiling point elevation . However, the magnitude of the freezing point depression is larger than the boiling point elevation for the same solvent and the same concentration of a solute . Because of these two phenomena, the liquid range of a solvent is increased in the presence of a solute . </P> <P> The extent of boiling - point elevation can be calculated by applying Clausius--Clapeyron relation and Raoult's law together with the assumption of the non-volatility of the solute . The result is that in dilute ideal solutions, the extent of boiling - point elevation is directly proportional to the molal Concentration of the solution according to the equation: </P> <Dl> <Dd> ΔT = K b </Dd> </Dl> <Dd> ΔT = K b </Dd>

What effect does concentration have on the vapor pressure and boiling point of a solution