Acta Phys. -Chim. Sin. ›› 1992, Vol. 8 ›› Issue (06): 819-823.doi: 10.3866/PKU.WHXB19920620

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Isopiestic Osmotic Coefficient and Activity Coefficient of some Naphthyldisulfonates

Zhao Ji-Hong; Wu Ding-Quan; Qu Song-Sheng   

  1. Department of Chemistry, Wuhan University, Wuhan 430072
  • Received:1991-05-14 Revised:1992-01-20 Published:1992-12-15
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Abstract: The osmotic coefficients and activity coefficients for aqueous solution of naphtha-lene-1,5-disulfonic acid disodium and 2-naphthol-3,6-disulfonic acid sodium salt at 298.15 K have been determined by the isopiestic method. The excess Gibbs free energies were evaluated with the corresponding osmotic coefficients and activity coefficients.

Key words: Isopiestic method, Osmotic coefficient, Activity coefficient