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The driving force of the electron flow from anode to cathode shows a potential drop in the energy of the electrons moving into the wire. The difference in potential energy between the anode and cathode is known as the cell potential in a voltaic cell.
The formula for cell potential is
Solved Example
Example 1: A concentration cell was created by immersing two silver electrodes in 0.05M and 0.1M AgNO3 solution. Write cell representation, cell reactions and find the EMF of the concentration cell.
Answer:
The cell representation:
The cell reactions:
To find the EMF of a concentration element, you must use the following formula:
c1>c2
Therefore,E = 0.08 V