“…The rate constant of the disproportionation of A-' radicals, k,, is known at different pH values (14). M, we did not observe any change of absorbance at 360 nm in a pH region from 4.2 to 7.5, therefore in the course of AH, consumption [A-'1 did not exceed 4 x M. Using the above mentioned values of k, and the experimentally determined k,,, as k, in accordance with Scheme (b), one can see that relation [6] is not fulfilled.…”