Calculate cell potential (E°cell) from cathode and anode reduction potentials, pick common half-cells for standard E°, or apply the Nernst equation.
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Cell Potential Formula
The following formula is used to calculate a cell potential.
- Where Ec is the cell potential
- Eca is the cathode reduction potential
- Ea is the anode reduction potential
To calculate the total cell potential, subtract the anode potential from the cathode potential.
Cell Potential Definition
Cell potential is defined as the difference between the cathode potential and the anode potential in a battery cell.
Cell Potential Example
How to calculate a cell potential?
- First, determine the cathode potential.
Calculate the cathode potential.
- Next, determine the anode potential.
Calculate the anode potential.
- Finally, calculate the cell potential.
Calculate the cell potential using the equation above.
FAQ
The cell potential is the difference in potential between the anode and cathode of a battery cell. It measures electrical driving force per unit charge, not the cell's total energy-storage capacity.
