Abstract
Interfacial transfer kinetics were determined for 3 series of solute homologues in a variety of aqueous : organic solvent systems in the two-phase transfer cell. Experimentally determined interfacial transfer kinetics were compared to those estimated from a theoretical equation derived by Byron et al. (1981). The importance of aqueous and organic diffusional resistance to solute transfer was examined. A method is described to calculate a theoretical solute and solvent dependent ratio that enables estimation of the dominant diffusional resistance for a particular solute in a given solvent system. Choice of solute and solvent system allowed the predictive theories to be tested under conditions where aqueous, organic or mixed diffusional control predominated. Successful prediction of the transfer kinetics of any homologue in a series was possible in all cases from a knowledge of partition coefficient and transfer kinetics of the parent compound, the partition coefficient of the homologue and some easily determined system variables.
Published Version
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