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Flow of Facts

  • Oxidation is the loss of electrons where as gain of electrons is reduction.
  • The substance that is reduced is called an oxidant and that which is oxidized is a reductant.
  • Redox reactions are the ones in which oxidation and reduction go hand in hand (simultaneously)
  • Oxidation number is the charge acquired by an atom either by the loss or gain of electrons.
  • Standard electrode potential is the potential at 25oC and 1 atm pressure.
  • The electrochemical cells can be conveniently constructed by knowing the respective electrode potentials.
  • The value of potential of a cell can be calculated in terms of their reduction potentials (Ecell = ER - EL). If this value is positive the cell reaction is spontaneous and vice versa.

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