 asked in category: General Last Updated: 25th May, 2020

The freezing point depression ∆T = KF·m where KF is the molal freezing point depression constant and m is the molality of the solute. Rearrangement gives: mol solute = (m) x (kg solvent) where kg of solvent is the mass of the solvent (lauric acid) in the mixture. This gives the moles of the solute.

Keeping this in view, what is KF in freezing point depression?

Kf is the molal freezing point depression constant of the solvent (1.86 °C/m for water). m = molality = moles of solute per kilogram of solvent.

Furthermore, what is the lowest freezing point? Mercury has the lowest freezing point of any metal, at -38.87° C. Helium has the lowest freezing point of all substances, at -272.2° C, which is less than I° above absolute zero.

Keeping this in consideration, what is the formula for KF?

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Potassium fluoride is the chemical compound with the formula KF.

How is freezing point depression used in real life?

Freezing Point Depression in Everyday Life When salt is put on an icy road, the salt mixes with a small amount of liquid water to prevent melting ice from re-freezing. If you mix salt and ice in a bowl or bag, the same process makes the ice colder, which means it can be used for making ice cream.

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25th May, 2020

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