How to Calculate Standard Cell Potential (E°cell)
Calculate redox cell voltage step-by-step:
Enter Cathode E°cat
Input standard reduction potential of the cathode half-reaction in Volts.
Enter Anode E°an
Input standard reduction potential of the anode half-reaction in Volts.
Subtract Potentials
Subtract E°cell = E°cat - E°an.
Evaluate Spontaneity
Positive E°cell indicates a spontaneous Galvanic cell; negative indicates an Electrolytic cell.
Key Features & Electrochemistry Principles
Galvanic vs. Electrolytic Classifier
Automatically determines whether the cell produces voltage or requires external power.
Free Energy Conversion
Calculates ΔG° = -n · F · E°cell (where F = 96,485 C/mol).
Electron Transfer Direction
Displays direction of electron flow from anode (oxidation) to cathode (reduction).
Electrochemistry Guide: Standard Cell Potential
The Standard Cell Potential (E°cell) represents the potential difference between two half-cells under standard conditions (1 M concentration, 1 atm pressure, 25°C):E°cell = E°cathode - E°anode
Frequently Asked Questions
?What happens at the anode vs cathode?
Oxidation occurs at the Anode (loss of electrons). Reduction occurs at the Cathode (gain of electrons). MNEMONIC: "An Ox, Red Cat".