Abstract
The Taylor dispersion (peak-broadening) method is used to measure ternary mutual diffusion coefficients at 25°C for fifteen different compositions of the system KCl−LaCl 3 -water at ionic strengths from 0.02 to 0.24 mol-dm−3. The diffusion coefficients are evaluated by least-squares analysis of the refractive index profiles across the dispersed solute peaks. Diffusing LaCl 3 is found to cotransport significant amounts of KCl. Monte Carlo simulations are used to estimate the precision of ternary diffusion coefficients determined by the dispersion method. Tracer diffusion coefficients are also reported for La3+ ions in aqueous KCl solutions and for K+ ions in aqueous LaCl 3 solutions.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
H. J. V. Tyrrell and K. R. Harris,Diffusion in Liquids (Butterworths, London, 1984).
H. Fujita and L. J. Gosting,J. Phys. Chem. 64, 1256 (1960).
R. Mathews, J. G. Albright, D. G. Miller, and J. A. Rard,J. Phys. Chem. 94, 6875 (1990).
Z. Deng and D. G. Leaist,Can. J. Chem. (in press).
D. G. Leaist,J. Solution Chem. 14, 709 (1985).
F. H. Spedding, P. E. Porter, and J. M. Wright,J. Am. Chem. Soc. 74, 2055 (1952).
W. E. Price,J. Chem. Soc. Faraday Trans. I 84, 2431 (1988).
D. G. Leaist,J. Chem. Soc. Faraday Trans. I 76, 597 (1991).
D. G. Leaist,Ber. Bunsenges. Phys. Chem. 95, 119 (1991).
J. S. Alper and R. I. Gelb,J. Phys. Chem. 94, 4747 (1990).
H. S. Harned and R. L. Nuttall,J. Am. Chem. Soc. 71, 1460 (1949).
J. A. Rard and D. G. Miller,J. Chem. Eng. Data 25, 211 (1980).
H. S. Harned and C. A. Blake, Jr.,J. Am. Chem. Soc. 73, 4255 (1951).
D. G. Leaist and P. A. Lyons,J. Phys. Chem. 86, 564 (1982).
R. A. Robinson and R. H. Stokes,Electrolyte Solutions, 2nd edn., (Academic, New York, 1959).
D. G. Leaist,J. Solution Chem. 20, 175 (1991).
G. P. Rai and H. T. Cullinan, Jr.,J. Chem. Eng. Data 18, 213 (1971).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Deng, Z., Leaist, D.G. Ternary mutual diffusion coefficients of KCl-LaCl3-water mixtures from taylor dispersion profiles. J Solution Chem 21, 15–22 (1992). https://doi.org/10.1007/BF00648977
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00648977