What is Freezing Point Depression?
Practice Version
Freezing Point Depression:
The difference in temperature between a solution's freezing point and the freezing point of its pure solvent. Freezing point depression. Freezing point depression is when adding a substance to a solvent lowers the temperature at which the liquid freezes.
Example:
Imagine trying to walk through a crowded room versus an empty one. Just as moving freely is easier in an empty room, a pure solvent freezes at a higher temperature compared to when it's mixed with a solute, which disrupts its orderly freezing process. The crowded room represents the solute particles in a solution, which interfere with the solvent particles' ability to align and solidify, thereby lowering the freezing point compared to the pure, empty room where particles can freeze more easily.
