DETERMINATION OF STABILITY-CONSTANTS BY USING NORMAL PULSE VOLTAMMETRY AT MICROELECTRODES

A new procedure for determination of stability constants by means of p ulse voltammetry at microelectrodes is presented. Normal pulse voltamm etry at a copper microdisk electrode was employed to determine stabili ty constants of the dichlorcuprate(I) complex ion in aqueous solution. Copper(I) ions were generated during pulses to positive potentials an d the value of the overall formation constant was determined from the shift in potential of normal pulse voltammograms. The method gives fas t and reliable measurements of stability constants and extends the ran ge of possible measurements.