EMPIRICAL-EQUATION FOR CALCULATING THE CHARGE INVOLVED IN THE PREPARATION OF MERCURY MICROELECTRODES

A procedure is described to obtain an empirical equation linking the c harge, Q, concentration, C, and electrolysis time, t, involved in the preparation of mercury microelectrodes from solutions containing mercu ry (I) ions. The empirical equation obtained is valid in the concentra tion and electrolysis time ranges varying between 1.10(-4) - 1.25.10(- 2) M and 50-3000 s, respectively. The usefulness of the equation in pr edicting the appropriate coefficient k of the steady state limiting cu rrent at the mercury microelectrodes: i(ss) = knFDCr is shown by compa ring theoretical and experimental data obtained from test solutions of [RU(NH3)(6)]Cl-3.