Free Cell Potential Calculator
Calculate the standard cell potential (E°cell) of an electrochemical cell from the standard reduction potentials of the cathode and anode.
V
V
Standard Cell Potential (E°cell)
1.10 V
Standard Cell Potential (E°cell) vs E° of Cathode (Reduction)
Standard Cell Potential
Formula
E°cell = E°cathode − E°anode
Where:
Both values are entered as standard reduction potentials. The anode undergoes oxidation, so its reduction potential is subtracted.
Positive E°cell means the reaction is spontaneous (galvanic cell).
Example Calculation
A Cu/Zn galvanic cell: Cu²⁺/Cu E° = +0.34 V (cathode), Zn²⁺/Zn E° = -0.76 V (anode).
- 01E°cell = E°cathode - E°anode
- 02E°cell = 0.34 - (-0.76)
- 03E°cell = 0.34 + 0.76
- 04E°cell = 1.10 V
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