Answer to Question #43596 in Physical Chemistry for najma

Question #43596
freezing point of pure solvents higher than freezing point solution in which non-volatile solute dissolve justify
1
Expert's answer
2014-06-23T11:37:57-0400
If the solution is treated as an ideal solution, the extent of freezing point depression depends only on the solute concentration that can be estimated by a simple linear relationship with the cryoscopic constant ("Blagden's Law"):
ΔT = i∙b∙Kf
where ΔT is temperature depression, i is the van 't Hoff factor, b is the molality (mol solute per kg of solvent), Kf is the cryoscopic constant.
According to this formula, the freezing point depression linearly increases with increase of the solute concentration.

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