Transfer activity coefficient symbolized

Nevertheless, the size of the transfer contribution ought to be considered when an exact analysis of experimental data is attempted. The problem can be formally expressed by the introduction of a transfer activity coefficient which is in the following designated by the symbol y. 

Different symbols have been used for the transfer activity coefficient the symbol O is suggested to emphasize that fractionation factor theory includes the medium effect and that no special provision need be made for it. 

Here a is the effective cationic transfer coefficient, X is the complexing agent, and r and r are reaction orders the reaction order in cations is assumed to be one. The subscript indices in front of the chemical symbols and activity terms (a) denote electrolyte (3) and oxide (2), while (1) is reserved for the underlying metal. Another cationic reaction at the oxide solu-tion interface is the transfer of hydrogen ions... 

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