ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 1998,Vol.14>> Issue(08)>> 691-697     doi: 10.3866/PKU.WHXB19980805         中文摘要
Determination of Activity Coefficients of RbCl in (H2O-DMF) Mixed Solvents at 283.15 to 318.15K
Li Lin-Wei, Chu De-Ying, Liu Rui-Lin
College of Chemistry and Molecular Engineering,Peking University,Beijing 100871|Department of Chemistry,Liaocheng Teacher's College,Liaocheng 252059
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 The reversible cell used in this work consists of the monovalent cation selective electrode and chloride selective electrode, namely
Cl--ISE|RbCl(m), H_2O(1- x)- DMF(x)| M+ - ISE
The standard electromotive forces of the above cells have been measured at seven temperatures ranging from 283.15 to 318.15 K, and standard free energies of transfer Gt of RbCl from H2O to H2O-DMF mixed solvents, mean ionic activity coefficients of RbCl in mixed solvents and its medium effects have been calculatcd. The behavior of Δ?Gt and of RbCl with mole fractions x of DMF in the mixed solvents have been discussed.

Keywords: RbCl   H2O-DMF   Standard free energy of transfer   Activity coefficients   Medium effect  
Received: 1997-10-13 Accepted: 1997-12-24 Publication Date (Web): 1998-08-15
Corresponding Authors: Chu De-Ying Email:

Cite this article: Li Lin-Wei, Chu De-Ying, Liu Rui-Lin. Determination of Activity Coefficients of RbCl in (H2O-DMF) Mixed Solvents at 283.15 to 318.15K[J]. Acta Phys. -Chim. Sin., 1998,14 (08): 691-697.    doi: 10.3866/PKU.WHXB19980805
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