Determination of Electrochemical Cell Characteristics One-half of an electrochemical cell consists of a pure nickel electrode in a solution of Ni** ions; the other half is a cadmium electrode immersed in a Cd²* solution. (a) If the cell is a standard one, write the spontaneous overall reaction and calculate the voltage that is generated. (b) Compute the cell potential at 25°C if the Cd² and Ni2* concentrations are 0.5 and 10M, respectively. Is the spontaneous reaction direction still the same as for the standard cell? Cd +2e → Cd E =-0.403V %3D Ni +2e Ni E=-0.250V %3D

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