Аннотация:An investigation was made of the adsorption of Br** minus ions on the Hg/H//2O interface. It was found that at NaBr concentrations greater than equivalent to 10** minus **3 M the capacitance values were not dependent on the frequency in the range from 80 to 1000 Hz, and the C,E curves were recorded at a frequency of 410 Hz. Dispersion of the capacitance with the frequency was observed at NaBr concentrations smaller than 10** minus **3 M. Extrapolation of the measured values of C to zero frequency was carried out under these conditions in order to obtain the equilibrium values of the capacitance of the double layer.