Hi there,
A rechargeable battery is nothing but it behaves like galvanic cell during discharging (forward reaction occurs)
and behaves as electrolytic cells during charging (reverse reaction occurs).

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A Nickel-Cadmium rechargeable battery can provide about 1.2 V via the following reaction, which is occurring...
A rechargeable nickel-cadmium (NiCd) battery contains the following half-reactions: NiO2 +2H2O(l)+2e– → Ni(OH)2 +2OH– E0 =0.49V Cd(OH)2 +2e– →Cd(s)+2OH– E0 =–0.81V a. What is the standard cell potential or voltage of this NiCd cell? b. Write the net chemical reaction in the direction of spontaneous reaction. Is cadmium oxidized or reduced? c. Write an expression for the reaction quotient Q. What is Q if the electrolyte concentrations are: [NiO2] = 1 M and [Cd(OH)2] = 0.01M and [Ni(OH)2] = 0.001...
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