We considered the kinetics of electrochemical processes occurring during electrodeposition of coatings from a low-temperature ionic liquid based on a eutectic mixture of choline chloride and ethylene glycol, in which a trivalent chromium salt is dissolved. Irreversible current waves of Cr(III) ions discharge on a glassy carbon electrode in the electrolytes of studied compositions are not described by the "classical" equations of linear and cyclic voltammetry, which is due to both the presence of the migration component of the current and the cathodic passivation of the electrode. It has been established that the introduction of additional water into the electrolyte leads to an increase in the current density of the wave of irreversible discharge of Cr(III) ions on the glassy carbon electrode, which is caused by a significant decrease in the viscosity of the solution. The current efficiency of the chromium deposition reaction decreases when water is introduced into the ionic liquid. The X-ray amorphous coatings electrodeposited from the electrolyte under study, along with chromium, contain carbon and oxygen, the inclusion of which is due to the electrocatalytic properties of the freshly deposited chromium surface.