Abstract
An electrochemical investigation of the autocatalytic reduction of copper(II) by formaldehyde has been carried out employing the concepts of “mixed potential” theory. The anode process associated with electroless copper plating in an alkali-ethylenediaminetetraacetic acid solution was studied by potentiometric and potentiostatic methods. A cell design was proposed which allows measurements to be conducted on the electrode under examination when it is in contact with a solution of the reducing agent under both open-circuit and potentiostatic conditions. It was shown that when a copper electrode is in contact with a solution containing formaldehyde at a constant potential close to the mixed potential a transient current appears whose density exceeds the rate of reduction of the copper, expressed in current-density units.
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