Figure 24 Helmholtz "double-layer" model. The excess charge on the metal will be neutralized by a monomolecular layer of ions of opposite charge to that on the metal phase. This model does not account for the possible specific adsorption or random motion of ions.

Figure 24 - Helmholtz "double-layer" model. The excess charge on the metal will be neutralized by a monomolecular layer of ions of opposite charge to that on the metal phase. This model does not account for the possible specific adsorption or random motion of ions.