 Freezing-point depression

Freezing-point depression is the lowering of a solvent's equilibrium freezing temperature by dissolved solute. In the linear dilute approximation, $T_L=T_0-mC$ with $m>0$.

Freezing-point depression is a colligative property of solutions, which describes the phenomenon where the freezing point of a solvent is lowered when a solute is added. This occurs because the presence of solute particles disrupts the formation of the orderly crystalline structure of the solid phase (ice) that the solvent would normally form at its freezing point.