We gratefully acknowledge helpful discussions with S. G. Kukes regarding the physical and chemical nature of asphaltenes and the experimental assistance of P. T. Lindholm.
kZ//kl limits k-CH30H,/k-H2" to a maxiinum value of 1.3 from eq 7. This in turn limits the second term to a value less than 0.1. The data for the chloride system for kJk1 with the value of 1.5 equal to k-cH3oH/k-H2o limit the second term to a value of 2.0. The value of k ' + x -/ k + xis the only variable at constant solvent composition in the second term of eq 7 when k+HzO. U H~O -k k+CHaoHUCH30H > k + x -/ X -] and k'+HzO. ~~2 0 ( 5 ) P. S. Skell, J. H .
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