Five Important Concepts (1) the electrode's potential determines the analyte's form at the electrode's surface;;
(2) the concentration of analyte at the electrode's surface may not be the same as its concentration in bulk solution;
(3) in addition to an oxidation-reduction reaction, the analyte may participate in other reactions;
(4) current is a measure of the rate of the analyte's oxidation or reduction;
(5) we cannot simultaneously control current and potential