What is electrode potential according to galvanic cell ? Explain in detail.

Explanation

(a) Definition: A potential difference develops between the electrode and the electrolyte which is called electrode potential.
(b) Standard electrode potential : 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 potential are now called standard electrode potential.
(c) Anode and cathode in electrode potential:
(i) In a galvanic cell, th half-cell in which oxidation takes place is called anode and it has a negative potential with respect to the solution.
(ii) The other half-cell in which reduction takes place is called cathode and it has a positive potential with respect to the solution.