Redox reaction basics definition

This is the basic equation for relating changes in electric potential with changes in energy. This equation also takes advantage of the definition that 1 J = 1 V C. The variable n represents the number of moles of electrons that are transferred in the balanced redox reaction. Because completed redox reactions do not usually show the balanced number of electrons explicitly, we might have to figure this out from the redox reaction itself. 

In order to perform CV a potentiostat is used. The basic three electrode potentiostat setup is shown in Fig. 1.5. V/ jy is the input voltage from the potentiostat. As the reference electrode has a definite electrode potential, it is used to set the potential of the electrolyte. The counter electrode does not affect the solution potential and only carries current through redox reactions which are actually not a point of interest in CV. So carrying current and setting the solution potential are done by different electrodes. 

Give the basic definitions of oxidation and reduction and explain the basic procedure for balancing redox reactions. 

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