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how we make a cell using sodium and potasium as electrods ?why?
According to EMF series,
Reduction Potentials of K (potasium) and Na (sodium) are,
K+/K = -2.931 ?° volts
Na+/Na = -2.7 ?° volts
Both having highest reduction potentials and the prefer oxidation. But when we couple Na and K  Na undergoes reduction and KL undergoes oxidation in that cell.


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