Freezing Point Depression Calculator

Calculate Solution Freezing Point Changes with Precision

ChemistryCalculatorHub.info

Freezing Point Depression Calculator

Calculate the change in freezing point of a solution based on solute concentration.

ΔTf: - °C

Molality Calculator

Calculate the molality needed to achieve a desired freezing point depression.

Molality: - mol/kg

Understanding Freezing Point Depression

What is Freezing Point Depression?

Freezing point depression is a colligative property where the freezing point of a solution is lower than that of the pure solvent.

Van't Hoff Factor

The van't Hoff factor (i) accounts for the dissociation of the solute in solution:

  • i = 1 for non-electrolytes
  • i = 2 for NaCl
  • i = 3 for CaCl₂

Applications

Understanding freezing point depression is crucial for:

  • Antifreeze solutions
  • De-icing roads
  • Food preservation

Essential Formulas

Freezing Point Depression

ΔTf = Kf × m × i

Where:

  • ΔTf = Change in freezing point
  • Kf = Freezing point depression constant
  • m = Molality
  • i = Van't Hoff factor