When the concentrations of all the species involved
in a half-cell is unity then the electrode potential is known as standard
electrode potential According to IUPAC convention, standard
reduction potentials are now called standard electrode potentials In a
galvanic cell, the half-cell in which oxidation takes place is called anode
and it has a negative potential with respect to the solution The other
half-cell in which reduction takes place is called cathode and it has a
positive potential with respect to the solution