Why a cell stops working after some time...

Why a cell stops working after some time ?

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With time, the concentration of the electrolyte solution change. Hence, their electrode potentials change. When the electrode potentials of the two half `-` cells become equal, the cell stops working.

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The electrochemical cell stops working after some time because

Electrode potential of both the electrodes becomes zero

One of electrodes completely vanishes

Electrode potential of both electrodes equalizes

The reaction reverses its direction

An electrochemical cell stops working after some time because

Electrode potential of both the electrodes becomes zero.

Electrode potential both the electrons becomes equal.

One of the electrode is eaten away.

The reaction starts proceeding in opposite direction.

The electrochemical cell stops working after some time because:

electrode potential of both the electrodes becomes zero

electrode potential of both the electodes becomes equal

one of the electrodes is eaten away

the cell reaction gets reversed