Colligative Properties PowerPoint

Freezing Point Depression• Solution freezing points are always lowerthan that of the solvent liquid.• A similar formula is used to calculate thechange in the freezing point.ΔT f = k f m• ΔT f is the change in the freezing temp.,subtracted from the liquid’s original FP.• k f is the ‘molal freezing point constant’ whichdepends on the solvent. For water, k f is1.86°C/molal• m is the molality of the solution.