The results of the temperature dependent study of this reaction in water solution and in ethanol-water mixtures sho- wed a second order rate constant. The rate constants of the reaction in both ethanol-water mixtures and water solutions decreased steadily with increase in temperatures. It could be asserted that the reaction was not favoured at high temperatures in water. The results of the thermodynamic parameters in both media showed small negative values of Ea and ΔH and a large positive ΔG҂ which clearly showed that the reaction was not spontaneous in both ethanol- water mixtures and water solution over the considered temperature range. Reactions exhibiting these negative activation energies are reported typically to be barrierless reactions, in which the reaction proceeding relies on the capture of the molecules in a potential well. Other than these reasons it could be asserted that this reaction is a barrierless reaction both in water solution and ethanol-water mixtures.