Question

why is the elevation in boiling point of water different in the following solution 1)0.1molar nacl solution 2)0.1 molar sugar solution

Answer 1

∆Tb = Kbm where ∆Tb is difference in temperature of pure solvent and temperature of the solution, Kb is ebullioscopic constant, m is molality. Now, as we know that molality is moles of solute per kg of solution and no. of moles = given mass/ molar mass, so elevation in boiling point varies with molar mass of solute. Also Can't Hoff Factor i is responsible for variation in elevation in boiling point for different solutes.