Adsorption from an Electrolyte Solution

In the interpretation of the electrochemical dipole moment, it must be borne in mind that the adsorbate affects the surrounding solution. Thus, in the vicinity of an adsorbate with a dipole moment, the solvent dipoles will be oriented preferentially in the opposite direction, partially canceling the effect of the adsorbate dipole. The measurements give the total change in the surface dipole moment, 

Unfortunately, this procedure sometimes requires an extrapolation of the experimental data that limits its accuracy. Schmickler and Guidelli48 have gathered data for a number of systems. We shall report some of their data in the next section. 

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