) and perbromate (Br
) anions is found to be commensurate with that of potassium ions. Ammonium ions accelerate the reduc-tion of iodate (I
), bromate (Br
), and chromate (Cr
) anions in nonbuffered solutions and does not, in buffered ones. In the former case, the effect is connected with the pH change in the near-electrode layer during
the reaction and with the participation of ammonium ions in hydrolytic equilibriums, rather than with a simul-
taneous transfer of ammonium ions and electrons in an elementary act. The conclusions in the literature in favor
of a simultaneous transfer of the proton and electron in the proton-consuming reactions of reduction of anions
is shown to be ambiguous.