How is freezing point depression related to molality?
Answers
Freezing point depression is a colligative property observed in solutions that results from the introduction of solute molecules to a solvent. The freezing points of solutions are all lower than that of the pure solvent and is directly proportional to the molality of the solute.
ΔTf=Tf(solvent)−Tf(solution)=Kf×m(1)
where ΔTf is the freezing point depression, Tf (solution) is the freezing point of the solution, Tf (solvent) is the freezing point of the solvent, Kf is the freezing point depression constant, and m is the molality.
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⏩It is as depression in freezing point means decrease in temperature and the temperature of the solution changes according to the molality.
So, freezing point depression is related to molality.
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