University Chemistry ›› 2016, Vol. 31 ›› Issue (12): 83-85.doi: 10.3866/PKU.DXHX201606011

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Interpreting Freezing Point Depression from the Viewpoint of Entropy

Shuang-Xi XING,Wen-Dong SUN*()   

  • Published:2016-12-20
  • Contact: Wen-Dong SUN E-mail:sunwd843@nenu.edu.cn
  • Supported by:
    吉林省教育厅优质教学团队建设项目

Abstract:

The equation for depression of the freezing point for dilute solution is derived on the basis of △G=△H-TS. The change of entropy in the solution before and after phase transition reveals that the depression of the freezing point is originated from the larger entropy change in the process of dissolution than that in fusion. The further application of this equation is discussed in a more general manner.

Key words: Freezing point depression, Colligative properties of dilute solution, Phase transition entropy

MSC2000: 

  • G64