166.
Define standard electrode potential of an electrode.
Standard electrode potential (E°): The potential of an electrode, under standard conditions, when measured relative to the potential of standard hydrogen electrode is called standard electrode potential. It is represented by E°. The standard conditions are a 1M concentration of ions, 298K temperature and 1-atmosphere pressure. It is important to note that it is common practice to express all the electrode potentials as reduction potentials. The standard reduction potentials of an electrode may be defined as the reduction potential of an electrode as determined with respect to a standard hydrogen electrode. The reduction potential of an electrode is directly proportional to the concentration of the positive ions in solution, in contact with the metal.
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