University Chemistry ›› 2015, Vol. 30 ›› Issue (4): 68-73.doi: 10.3866/pku.DXHX20150468

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Modification of Debye-Hückel Theory

Liu Guojie, Hei Encheng   

  1. School of Chemistry, East China University of Science and Technology, Shanghai 200237, China
  • Published:2015-08-14

Abstract:

Based on the thermodynamic properties of ions in solution, we modified the Debye-Hückel expression. The modified expression could be well correlated with the mean activity coefficients of different strong electrolyte aqueous solutions with various ionic charges, and the applicable concentration range is extended to 6mol·kg-1.

Key words: Debye-Hückel theory, Strong electrolyte aqueous solution, Mean activity coefficients