Calcola l'abbassamento del punto di congelamento per qualsiasi soluzione utilizzando Kf, molalità e fattore di van't Hoff. Calcolatore gratuito di chimica per studenti, ricercatori e ingegneri.
The molal freezing point depression constant is specific to the solvent. Common values: Water (1.86), Benzene (5.12), Acetic Acid (3.90).
The concentration of solute in moles per kilogram of solvent.
The number of particles a solute forms when dissolved. For non-electrolytes like sugar, i = 1. For strong electrolytes, i equals the number of ions formed.
ΔTf = i × Kf × m
Where ΔTf is the freezing point depression, i is the van't Hoff factor, Kf is the molal freezing point depression constant, and m is the molality.
ΔTf = 1 × 1.86 × 1.00 = 0.00 °C
Visual representation of freezing point depression (not to scale)
This is how much the freezing point of the solvent will decrease due to the dissolved solute.
| Solvent | Kf (°C·kg/mol) |
|---|---|
| Water | 1.86 °C·kg/mol |
| Benzene | 5.12 °C·kg/mol |
| Acetic Acid | 3.90 °C·kg/mol |
| Cyclohexane | 20.0 °C·kg/mol |
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