Chemistry Practice Problems Freezing Point Depression Practice Problems Solution: Calculate the freezing point of a aqueous solution...

# Solution: Calculate the freezing point of a aqueous solution of K2SO4,Calculate the freezing point of a 0.100 m aqueous solution of K2SO4, taking interionic attractions into consideration by using the vant Hoff factor (i for 0.100 m K2SO4 = 2.32).

###### Problem

Calculate the freezing point of a aqueous solution of K2SO4,

Calculate the freezing point of a 0.100 m aqueous solution of K2SO4, taking interionic attractions into consideration by using the vant Hoff factor (i for 0.100 m K2SO4 = 2.32).

###### Solution

We’re being asked to determine the freezing point of an aqueous K2SO4solution. Aqueous means that K2SO4 was dissolved in water.

When calculating the freezing point of a solution, we’re going to use the Freezing Point Depression equation

Freezing Point Depression:

where

ΔTf = change in freezing point = Tf pure solvent  - Tf solvent

Kf = freezing point depression constant

i = van't Hoff factor of the solute = no. of ions

m = molality

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Freezing Point Depression

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