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化学学报
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化学学报 ›› 1994, Vol. 52 ›› Issue (4): 346-357. 上一篇    下一篇

研究论文

特丁醇和水混合溶剂多组分电解质热力学HCI-NaCI-tert.-C~4H~9OH-H~2O体系(5-45℃)

王琴萍;吕殿祯;蓝东升;赵奎宏   

  1. 辽宁大学化学系
  • 发布日期:1994-04-15

Thermodynamics of mixed electrolytes in mixed solvents-system of HCI-NaCI-tert.-C~4H~9OH-H~2O from 5 to 45℃

WANG QINPING;LU DIANZHEN;LAN DONGSHENG;ZHAO KUIHONG   

  • Published:1994-04-15

PDF

470

被引次数

24

本文在恒定特丁醇质量分数x=0.10的条件下, 应用电动势法测定了无液接界电池(A)和电池(B)的电动势:Pt,H~2(1.013×10^5Pa)|HCI(m),tert.-C~4H~9OH(x),H~2O(1-x)|AgCI-Ag (A)Pt,H~2(1.013×10^5Pa)|HCI(m),NaCI(m~B),tert.-C~4H~9OH(x),H~2O(1-x)|AgCI-Ag (B)

关键词: 水, 甲基, 盐酸, 乙醇 P, 电解质, 氯化钠, 电极电位, 活度系数, 多元体系, 特丁醇

The thermodn. properties of the HCl-NaCl-Me3COH-H2O system was studied by emf. measurements in the cells without liquid junction: Pt, H2(1.013 ?105 Pa)|HCl(m), Me3COH (x), H2O (1-x)|AgCl-Ag (A); Pt, H2(1.013 ?105 Pa)|HCl (mA), NaCl (mB), Me3COH (x), H2O (1-x)|AgCl-Ag (B) at constant total ionic strength I = 0.5, 1.0, 2.0 and 3.0 mol kg-1, from 5 to 45? where mA and mB are the molalities of HCl and NaCl, resp., x is the wt. percentage of tert-Bu alcohol in the mixed solvent, which is 10% during all measurement. The standard electrode potential of Ag-AgCl in the mixed solvent were determine from cell (A). The activity coefficients of HCl, gA in the mixed solvent system were determine from cell (B). The activity coefficients of HCl in HCl-NaCl solns. still obeys Harned rule. The standard transfer Gibbs free energies of HCl were calculated The primary, secondary and total medium effect of HCl were calculated and discussed.

Key words: WATER, METHYL GROUP, HYDROCHLORIC ACID, ETHANOL P, ELECTROLYTE, SODIUM CHLORIDE, ELECTRODE POTENTIAL, ACTIVITY COEFFICIENT, MULTICOMPONENT SYSTEM

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