(a) Write the reactions for the discharge and charge of a
Chapter , Problem 20.104(choose chapter or problem)
(a) Write the reactions for the discharge and charge of a nickelcadmium (nicad) rechargeable battery. (b) Given the following reduction potentials, calculate the standard emf of the cell: Cd1OH221s2 + 2 e- Cd1s2 + 2 OH-1aq2 E red = -0.76 V NiO1OH21s2 + H2O1l2 + e- Ni1OH221s2 + OH-1aq2 E red = +0.49 V (c) A typical nicad voltaic cell generates an emf of +1.30 V. 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.
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