207. Nickel plastic is immersed in a solution containing 3.1 g of NiSO4 in 200 cm3 of water at 25 C. Give a schematic representation of the nickel half-cell, the equation of the redox reaction accompanying the formation of the electrode potential. Calculate the electrode potential if the average ionic activity coefficient of nickel sulfate is 0.15. The value of the standard electrode potential of the nickel electrode is given in table. 3.

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