Question: (a) Write the reactions for the discharge and charge of a nickel-cadmium (nicad) rechargeable battery. (b) Given the following reduction potentials, calculate the standard emf

(a) Write the reactions for the discharge and charge of a nickel-cadmium (nicad) rechargeable battery.
(b) Given the following reduction potentials, calculate the standard emf of the cell:

(c) A typical nicad voltaic cell generates an emf of + 1.30. Why is there a difference between this value and the one you calculated in part (b)?
(d) Calculate the equilibrium constant for the overall nicad reaction based on this typical emf value.

Cd(OH)2(s) + 2 e-_ Cd(s) + 2 OH-(aq) Ered0.76 V NiO(OH)(s) + H20(I) + e-_ Ni(OH)2(s) + OH-(aq) Ered = +0.49 V

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