Depression of freezing point (Freezing point depression magnitude = i × cryoscopic constant × molality)

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Freezing point depression magnitude = i × cryoscopic constant × molality

What each symbol means

SymbolWhat it stands for
ivan’t Hoff factor
mMolality
K_fCryoscopic constant
ΔT_fT_f(pure) − T_f(solution) (positive magnitude)

When to use this

Dilute ideal; solute does not enter solid solvent (pure ice freezes out).