Freezing-point depression of a solution


The freezing point of a solution is always lower than that of pure solvent. A specific instrument (cryoscope) will determine freezing-point depression in experimental way.
If cryoscopic constants of solvent are known, the molecular mass of dissolved substances can be determined.

Training program

  • In-depth concepts related to:
    • Raoult’s law
    • cryoscopic constants
    • chemical potential
    • Gibbs-Helmholtz equation
    • concentration ratio
    • degree of dissociation
    • Van’t Hoff factor
    • cryoscopy
  • Determining the value of freezing-point depression of a solution after the dissolution of a strong electrolyte (NaCl) in water. Comparing experimental and theoretical values for this concentration will lead to determine the number of ions involved in electrolyte dissociation • Determining the apparent molar mass of a non-electrolyte from the value of freezing-point depression

Technical specifications
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