Prediction of the Conductance of Strong Electrolytes and the Calculation of the Ionization Constant of Weak Electrolytes in a Dilute Solution by a New Equation

Chemical Research in Chinese Universities ›› 2000, Vol. 16 ›› Issue (3): 230-235.

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Prediction of the Conductance of Strong Electrolytes and the Calculation of the Ionization Constant of Weak Electrolytes in a Dilute Solution by a New Equation

NI Liang, JIANG Wen-hua, HAN Shi-jun

Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China

Received:1999-01-25 Online:2000-08-24 Published:2011-10-22
Supported by:
Supported by the National Natural Science Foundation of China.

Abstract

Abstract: In order to predict the conductance for dilute 1-1 valent electrolyte solutions, a new conductance equation was proposed based on the Onsager and Onsagar-Fuoss-Chen conductance equation. It has only one parameter A , which can be obtained directly from the data of ionic limiting molar conductivity Λ^∞_m, and its expression is very simple. The new equation has been verified by the experimental molar conductivities of some single strong electrolyte and mixed electrolyte solutions at 298.15 Kreported in literatures. The results are in good agreement with the experimental data. Meanwhile the ionization constants of some weak electrolyte solutions were calculated by a modified equation of this new equation, and it was also found that the calculation results are in good agreement with the data in the literature.

Key words: Electrolyte, Prediction, Conductance equation, Constant of ionization

NI Liang, JIANG Wen-hua, HAN Shi-jun . Prediction of the Conductance of Strong Electrolytes and the Calculation of the Ionization Constant of Weak Electrolytes in a Dilute Solution by a New Equation[J]. Chemical Research in Chinese Universities, 2000, 16(3): 230-235.

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Prediction of the Conductance of Strong Electrolytes and the Calculation of the Ionization Constant of Weak Electrolytes in a Dilute Solution by a New Equation

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