Hey there! We have to arrange the solutions of KNO3, Li3PO4, Na2SO4, SnCl4 by their freezing points.
Freezing point depression is the decrease in freezing point of solution, when a solute is added to a solvent. It is calculated using this formula:
ΔTf = change in freezing point
i = van ‘t Hoff factor
Kf =freezing point depression constant
m = molality
Since, all the solutions have equal concentrations, we just have to look at the van ‘t Hoff factor to determine the freezing point depression.
Assuming equal concentrations, rank these aqueous solutions by their freezing point. From highest freezing point to lowest freezing point. KNO3, Li3PO4, Na2SO4, SnCl4
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What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Freezing Point Depression concept. If you need more Freezing Point Depression practice, you can also practice Freezing Point Depression practice problems.
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