Home / Formulas / Physics Formulas
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
![Cell Potential Formula 1 1 37](https://www.educationidol.in/wp-content/uploads/2022/09/1-37.gif)
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:
![Cell Potential Formula 2 2 23](https://www.educationidol.in/wp-content/uploads/2022/09/2-23.gif)
The cell reactions:
![Cell Potential Formula 3 3 8](https://www.educationidol.in/wp-content/uploads/2022/09/3-8.gif)
![Cell Potential Formula 4 4 4](https://www.educationidol.in/wp-content/uploads/2022/09/4-4.gif)
To find the EMF of a concentration element, you must use the following formula:
c1>c2
Therefore,E = 0.08 V