For the first part, we’re being asked to calculate the freezing point of a solution containing 10.6 g FeCl3 in 159 g water.
Recall that the freezing point of a solution is lower than that of the pure solvent and the change in freezing point (ΔTf) is given by:
The change in freezing point is also related to the molality of the solution:
i = van’t Hoff factor
m = molality of the solution (in m or mol/kg)
Kf = freezing point depression constant (in ˚C/m)
Recall that the Molality of a solution is given by:
Calculate the freezing point of a solution containing 10.6 g FeCl3 in 159 g water
Calculate the boiling point of a solution above.
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