Аннотация:Differential-capacitance curves were recorded at the Hg electrode in aqueous 0. 5 m M C//3F//7COONa plus 0. 5(1 minus m) M NaE solutions at 5, 25, and 60 degree C. Specific adsorbability of the C//3F//7COO** minus ions is extremely low, and chiefly determined by the entropy factor. Isotherms for the specific adsorption of C//3F//7COO** minus ions were calculated and analyzed at different values of the potential drop across the compact layer psi //u equals const. The relation between adsorption energy and psi //u was shown to pass through a maximum.