Acta Phys. -Chim. Sin. ›› 1991, Vol. 7 ›› Issue (04): 475-479.doi: 10.3866/PKU.WHXB19910419

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Thermodynamics of Mixed Electroyte in Mixed Solutions of d-Glucose and Water II. System of HCl-NaCl-d-Glucose-H2O(from 5 to 45 ℃)

Lv Dian-Zhen; Wang Qin-Ping; Wang Jie; Li Jin-Wen   

  1. Department of Chemistry, Liaoning University, Shenyang 110036
  • Received:1990-01-24 Revised:1990-10-09 Published:1991-08-15
  • Contact: Lv Dian-Zhen

Abstract: The thermodynamic properties of HCl-NaCl-d-Glueose-H_2O system was studied by emf measurement without liquid junction.
Pt, H_2(1.013×10~5 Pa)|Hel(m), d-Glucose(x), H_2O(1-x)| Agel-Ag (A) Pt, H_2(1.013×10~5Pa)|HCl(m_A), NaCl(m_B), d-Glucose(x), H_2O(1-x)|AgCl-Ag (B) at the mass percentage of d-Glucose x=5%, 15% and 20% in the mixed solution, from 5 to 45 ℃, for cell (B) at constant total ionic strength I=1.00 mol·kg~(-1). The standard electrode potential of Ag-AgCI in the mixed solution have been determined from cell (A). The activity coefficients of HCl, γ_A, in the mixed solution system have been determined from cell (B). The results show that the activity coefficients of HCl in HCl-NaCl solutions still obeye Harned Rule. The standard transfer Gibbs free energies of HCl have calculated. The primary, secondary and total medium effect of HCl have been calculated.

Key words: Mixed solutions, Thermodynamics of electrolyte, Medium effects