The dissolution of a copper anode has been studied in aqueous solutions, at pH 4, for a range of concentrations varying from 0.1 Mto 1.2 Min NaBr. Where the accumulation of the corrosion product on the copper was nonexistent or negligible, two phenomena account for the dissolution current: a surface phenomenon and a phenomenon of diffusion of the ions into the solution. The current associated with each of these slow steps has been determined from the linear relationshipi−1vs. ω−1/2.The main characteristics of the copper anode behavior are expressed as partial derivatives:,,, while the reaction order for the bromide ions is equal to 2. Furthermore, the linearity of the relationshipEvs. log10iarises as a direct consequence of a surface phenomenon limited by an electron transfer. A dissolution model that describes the main characteristics of the copper dissolution is presented. According to this model, the termidis entirely ascribable to the diffusion of a copper bromide complex, CuBr2−, from the surface of the electrode into the solution. The apparent activation energy calculation is 7 kcal/mol according to the model, while the experimental value is 6.5 kcal/mol.Finally, the observed oxidation wave when the electrode potential becomes sufficiently anodic compared to the reversible potential of the reaction Cu + Br− = CuBr + e, is associated with the passivation of the copper by γ-CuBr. [Journal translation]