Standard Electrode Potential(SEP) Definition:In electrochemistry,the standard electrode potential is the measure of the individual potential of a reversible electrode at standard state,1 mol dm3 or 1 atm, with reference to a standard hydrogen electrode(SHE). The basis for an electrochemical cell,such as the galvanic cell,is always a redox reaction which can be broken down into two half-reactions:oxidation at anode (loss of electron) and reduction at cathode(gain of electron).Electricity is generated due to electric potential difference between two electrodes.This potential difference is created as a result of the difference between individual potentials of the two metal electrodes with respect to the electrolyte. 88 Standard Electrode Potential (SEP)  Definition: In electrochemistry, the standard electrode potential is the measure of the individual potential of a reversible electrode at standard state, 1 mol dm-3 or 1 atm, with reference to a standard hydrogen electrode (SHE).  The basis for an electrochemical cell, such as the galvanic cell, is always a redox reaction which can be broken down into two half-reactions: oxidation at anode (loss of electron) and reduction at cathode (gain of electron). Electricity is generated due to electric potential difference between two electrodes. This potential difference is created as a result of the difference between individual potentials of the two metal electrodes with respect to the electrolyte