Because the older cells will not be able to function properly without the new cells taking over them. :)
What is it you need help on? there is nothing here????
ANSWER:
Answer : E cell standard is the potential difference between the two electrodes under standard conditions. Overall tendency for the redox reaction to occur spontaneously. A large positive E cell means the reaction is more spontaneous, and a negative E cell indicates a non spontaneous reaction.
Explanation: hope this answers your question
KOH is an Arrhenius base and increases the concentration of hydroxide ions when added to water.
