University Chemistry ›› 2016, Vol. 31 ›› Issue (3): 82-84.doi: 10.3866/PKU.DXHX20160382

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Analysis of the Formula of Liquid Junction Potential

Guang-Hui HU*(),Zhan-Chang PAN   

  • Published:2016-04-06
  • Contact: Guang-Hui HU
  • Supported by:


In this paper, the cause of liquid junction potential was analyzed with example of two different concentrations of silver nitrate. Here, we point out the difference between the total Gibbs energy and the excess charge Gibbs energy and deduce the formula of liquid junction potential. At last, the relationship between liquid junction potential and activity ratio is discussed.

Key words: Liquid junction potential, Silver nitrate, Chemical potential, Excess charge, Gibbs energy


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