Question

given the density of solution of 5gram of toluenev and 2.25 gram of benzene is 0.876 gram per centimetre cube calculate the molarity of the solution​

Answer 1

Here, you could equally have a solution of benzene in toluene or a solution of toluene in benzene. The advantage of using molality, or opposed to molarity, is that because we have used mass as the measure of solvent, molality is independent of volume. Temperature would affect the volume of both toluene and benzene, therefore, a measurement of molality is independent of temperature.