| Abstract
| - The electromotive forces EA of concentration cells with transference Ag|AgCl|HCl(m2,var), (S + H2O)||HCl(m1,fixed), (S + H2O)|AgCl|Ag, where m1,fixed and m2,var denote electrolyte molalities (fixed and variable,respectively), have been measured at T = 298.15 K in a wide range of aqueous organic solvents (S +H2O) with both protic (methanol, ethanol, propanol, ethylene glycol, and glycerol) and aprotic cosolvents(propylene carbonate, acetonitrile, and 1,4-dioxane) of low to high permittivities, allowing the determination of infinite dilution ionic transference numbers for HCl in such solvents. Appropriate combinationof the latter with limiting molar conductivity data, determined in the same media, yielded the limitingionic mobilities. The results provide an insight on the effect of the organic cosolvents on relative andabsolute transport properties of HCl. They are compared with results obtained by our group for “viscous-motion” alkali halides MeCl, discussed in terms of dielectric friction parameters. For the limiting case ofpure water, the abundant transference cell data available up to very high HCl concentrations have nowbeen reassessed along our recently improved interpretative scheme.
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