ISSN:
1572-8927
Keywords:
Conductance equation
;
mixed electrolytes
;
electrophoresis
;
ionic interactions
;
solvent motion
;
Poisson-Boltzmann equation
;
electrolyte solution
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The electrophoretic velocity is computed through the order linear in concentration for a system containing any number of species of ions of any charges. The computation is based on the general theory of Fuoss and Onsager and the method for the generalization to mixed electrolytes developed by Chen and Onsager for the primitive model. The Boltzmann factor exp. (—ei Ψ ji/kT) is retained explicitly through the computation to obtain a result consistent with earlier computations of the relaxation field. The equilibrium potential including a correction to Poisson-Boltzmann equation is used, which adds a linear term ΔV j c to the electrophoretic velocity in agreement with the result of Murphy and Cohen. The correction to the ionic distribution due to the solvent motion is considered, which results in a linear term inversely proportional to the square of the viscosity of the solution. The main contribution is ΔV j E , which is in agreement with the result for symmetrical electrolytes of Falkenhagen et al. with only a slight difference due mainly to the different approximation used in the computation of the local force.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00655207
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