Depression of Freezing Point ($$\Delta T_f$$)

$$\Delta T_f = i \cdot K_f \cdot m$$

Concept: A colligative property - Calculates the decrease in the freezing point of a solvent upon the addition of a non-volatile solute.

Notation:

• $$\Delta T_f$$ = Depression of freezing point ($$T_f^\circ - T_f$$);
• $$i$$ = van 't Hoff factor;
• $$K_f$$ = Molal depression constant (Cryoscopic constant);
• $$m$$ = Molality of solution.