. Write Positive and negative electrode potentials


Best Answer

If on combining an electrode A with the SHE, a reduction process (gain of electrons) occurs at the electrode, the potential of the electrode is called as reduction potential . It is given a positive sign as reduction electrode potential or a negative sign as oxidation electrode potential. On the other hand, if on combining an electrode B with the SHE, an oxidation process (loss of electrons) occurs at B, the electrode potential (half - cell potential) is called as the oxidation potential of electrode B. It is given a positive signs as oxidation electrode potential and a negative sign as reduction electrode potential. Thus in short,

Standard oxidation potential for any half cell = - (Standard reduction potential)

Standard reduction potential for any half cell = - (Standard oxidation potential) 

 

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