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Acta Physico-Chimica Sinica  1998, Vol. 14 Issue (08): 691-697    DOI: 10.3866/PKU.WHXB19980805
Article     
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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Abstract  

 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.



Key wordsRbCl      H2O-DMF      Standard free energy of transfer      Activity coefficients      Medium effect     
Received: 13 October 1997      Published: 15 August 1998
Corresponding Authors: Chu De-Ying   
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. Acta Physico-Chimica Sinica, 1998, 14(08): 691-697.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB19980805     OR     http://www.whxb.pku.edu.cn/Y1998/V14/I08/691

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