Stepwise Reactions in Chronopotentiometry

Abstract

was proceeding through the chlorine intermediate as one would predict. The addition of cupric ion (final concentration, 0.03F) caused the reaction to speed up satisfactorily; no adverse effects of the cerous salt were noticed. Thus large amounts of chloride interfere in the ceric titration of iron, but one can easily use chlorine as titrant in the presence of cerous if the requisite amount of copper is present as a catalyst. If the sample originally contains a large amount of chloride, then there would be no point in adding cerous ion to the solution at all.Test Method Using Standard Samples.With the above-mentioned interferences in mind, four Bureau of Standards samples were chosen, and their iron content determined by this method. The silver reductor was used and a parallel blank run in all cases; the blank was negligible except in the case of the ferrosilicon.Fluorspar. Standard Sample No.

Triangular current-sweep chronopotentiometry at rotating disk and stationary, planar electrodes

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Applying Immittance Spectroscopy to Monitoring Hydrogen Peroxide in the Presence of Ascorbic Acid. Part I: Theoretical Considerations

“…Nevertheless, the net reaction in neutral and acidic solutions (given in Eq. 1) may be subdivided into the following set of reaction steps, involving the loss of a single proton or electron [14±16, 18,19], in a so-called``ECEC'' mechanism, where E signi®es an electron-transfer step and C signi®es a chemical step [20]: …”

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