The electrochemical cell stops working after sometime. Why? Select the proper choice from the given multiple choices.
(A) Increase of temperature
(B) The difference of cell potentials of both electrodes become zero.
(C) By reversing the direction of reaction taking place in the cell.
(D) Due to change in concentration
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Electrochemical cells stop working after a certain amount of time (D) Due to change in concentration.
Electrochemical cells work on the principle of the transfer of electrons between two different containers. They can be of two types: primary or secondary. Primary cells cannot be recharged, and are of single use type. Secondary cells can be recharged, and do not need constant replacement. Thus, changes in concentration cause electrochemical cells to fail.
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