The Standard Cell Potential for the Nickel-Cadmium Battery Is 1 $\to$

question 85

Multiple Choice

The standard cell potential for the nickel-cadmium battery is 1.35 V,and the cell reaction can be written as 2 NiO(OH) (s) + 2 H₂O( ) + Cd(s) $\to$ 2 Ni(OH) ₂(s) + Cd(OH) ₂(s)
Which one of the following statements do you expect to be true based on the Nernst equation? Note: Q = reaction quotient,and K = equilibrium constant for the cell reaction.

• A)As the battery is used,the cell voltage approaches zero because Q approaches K in value.
• B)When the battery no longer works,the cell voltage is zero because Q = K.
• C)As the battery is used,the cell voltage does not change because Q equals 1.
• D)When the battery is fully charged,Q > K.
• E)When the battery is fully charged,Q < K.

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