The hydrolysis of acetic anhydride to acetic acid was studied by measuring the conductivity. The measurements were based on the conductivity of a weak electrolyte. The reaction kinetics when producing acetic acid (CH3COOH) from acetic anhydride ((CH3CO)2O) and water (H2O) was checked in a stirred batch reactor under different temperatures (T1 = 20 ℃, T2 = 23 ℃ and T3 = 26 ℃):(CH3CO)2O + H2O ↔ 2 CH3COOH The course of the reaction was followed by measuring a weak electrolyte conductivity, in our case, acetic acid. The kinetic parameters of acetic acid production (activation energy, reaction rate constant, rate order) were determined. Experimental data agrees quite well with the data in the literature.