Freezing Point Depression Formula

Equation for calculate freezing point depression is,

ΔT_F = K_F · b · i

where,

K_F is the cryoscopic constant
b is the molality (moles solute per kilogram of solvent)
i is the van't Hoff factor (e.g. i = 2 for NaCl, 3 for BaCl₂)
ΔT_F, the freezing-point depression (T_{F (pure solvent)} − T_{F (solution)}).

b is the molality (moles solute per kilogram of solvent)

i is the van't Hoff factor (e.g. i = 2 for NaCl, 3 for BaCl₂)

ΔT_F, the freezing-point depression (T_{F (pure solvent)} − T_{F (solution)}).