Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Traube’s Rule for Soluble Monolayers of Homologous Strong Electrolytes
Kunio Tamaki
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1965 Volume 38 Issue 11 Pages 1987-1989

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Abstract

By using the free energy of the adsorption of the CH2 or the CF2 group from water to the surface, W, and the surface potential of Gouy’s theory, Traube’s factor, K, that is, the ratio of the respective concentrations, Cn and Cn+1, required to effect the equal lowering of surface or interfacial tension for successive homologous strong electrolytes with n and n+1 CH2 or CF2 groups, has been derived as;
K=CnCn+1=exp(−W⁄2RT)
where R is the gas constant and T, the absolute temperature. This equation has been shown to be applicable also in obtaining a very good approximation for homologous sodium alkyl sulfates or perfluoro acids.

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