obtain the relationship between freezing point depression of a solution containing nonvolatile nonelectrolyte and its molar mass.
Answers
Explanation:
The freezing point depression, ΔTf of a solution is directly proportional to molality (m) of the solution. ∴ ∴ ΔTf ∝ m ∴ ∴ ΔTf = Kf m where Kf is a molal depression constant. The molality of a solution is given by, m = Number of moles of the solute Weight of the solvent in kg m=Number of moles of the soluteWeight of the solvent in kg If W1 grams of a solvent contain W2 grams of a solute of the molar mass M2, then the molality m of the solution is given by, If the weights are expressed in kg then, Δ T f = K f × W 2 W 1 M 2 ΔTf=Kf×W2W1M2 The unit of Kf is K kg mol-1 Hence, from the measurement of the depression in the freezing point of the solution, the molar mass of the substance can be determined.Read more on Sarthaks.com - https://www.sarthaks.com/1383359/relationship-between-freezing-depression-solution-containing-nonvolatile-nonelectrolyte