Specific adsorption of chloride ions on liquid Ga electrode from N-methylformamide solutions with constant ionic strength |
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| Authors: | V V Emets B B Damaskin |
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| Institution: | 1.Frumkin Institute of Physical Chemistry and Electrochemistry,Russian Academy of Sciences,Moscow,Russia;2.Faculty of Chemistry,Moscow State University,Vorob’evy Gory, Moscow,Russia |
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| Abstract: | Differential capacitance curves are measured by mans of an ac-bridge in the system Ga/N-MF + 0.1m M KCl + 0.1(1 − m) M KClO4] with the surface-active anion taken in the following molar fractions m: 0, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, and 1. As compared with the other solvents, N-methylformamide (N-MF) makes it possible
to realize the highest positive charges of the Ga electrode at which the electrode remains ideally polarizable (up to 20 μC/cm2). The data on the specific adsorption of Cl− ions in the mentioned system can be described qualitatively by the Frumkin isotherm in which the free energy is considered
as a linear function of the electrode charge. |
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