Study of thermodynamic properties of quaternary mixture RbCl+Rb2SO4+CH3OH+H(2)ObyEMF measurement at 298.15K

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	Study of thermodynamic properties of quaternary mixture RbCl+Rb2SO4+CH3OH+H(2)ObyEMF measurement at 298.15K
	Zhang, J ; Gao, SY ; Xia, SP ; Yao, Y
	2004-12-10
发表期刊	FLUID PHASE EQUILIBRIA
卷号	226 页码:307-312
关键词	Activity Coefficient Osmotic Coefficient Mixed Rubidium Salt Mixed Solvent Emf Measurement
摘要	The electromotive force (EMF) measurements of the cell: Rb-ion selective electrode (ISE)/RbCl (m(A)), Rb2SO4 (m(B)), CH3OH (X), H2O (1-X)/Ag-AgCl with X = 10wt.% on the quaternary system RbCl+Rb2SO4+CH3OH+H2O were carried out at 298.15 K and over total ionic strengths from 0.0050 mol kg(-1) up to near saturated concentration 2.5000 mol kg(-1). The Rb-ISE and Ag-AgCl electrodes used in this work were prepared in our laboratory and exhibited reasonably good Nernst response. The activity coefficients of RbCl in the mixture were directly determined. The experimental data were analyzed by using the Harned rule and Pitzer ion interaction model, and the corresponding model parameters required in the two equations for this system have been evaluated. It was found that the experimental results obey the Harped rule and the Pitzer model can be used to describe the system satisfactorily. The activity coefficients of Rb2SO4, the osmotic coefficients of the mixtures and the excess Gibbs free energy were also calculated. (C) 2004 Published by Elsevier B.V.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5606
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Henan Univ Sci & Technol, Dept Chem Engn, Luoyang 471003, Peoples R China 2.Chinese Acad Sci, Inst Salt Lakes, Xian 710043, Peoples R China
推荐引用方式 GB/T 7714	Zhang, J,Gao, SY,Xia, SP,et al. Study of thermodynamic properties of quaternary mixture RbCl+Rb2SO4+CH3OH+H(2)ObyEMF measurement at 298.15K[J]. FLUID PHASE EQUILIBRIA,2004,226:307-312.
APA	Zhang, J,Gao, SY,Xia, SP,&Yao, Y.(2004).Study of thermodynamic properties of quaternary mixture RbCl+Rb2SO4+CH3OH+H(2)ObyEMF measurement at 298.15K.FLUID PHASE EQUILIBRIA,226,307-312.
MLA	Zhang, J,et al."Study of thermodynamic properties of quaternary mixture RbCl+Rb2SO4+CH3OH+H(2)ObyEMF measurement at 298.15K".FLUID PHASE EQUILIBRIA 226(2004):307-312.