Calculadora de Potencial de Célula — Formula
## Standard Cell Potential
### Formula
**E°cell = E°cathode − E°anode**
Where:
- **E°cell** = standard cell potential (V)
- **E°cathode** = standard reduction potential of the cathode
- **E°anode** = standard reduction potential of the anode
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).
### Formula
**E°cell = E°cathode − E°anode**
Where:
- **E°cell** = standard cell potential (V)
- **E°cathode** = standard reduction potential of the cathode
- **E°anode** = standard reduction potential of the anode
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).
Exemplo Resolvido
A Cu/Zn galvanic cell: Cu²⁺/Cu E° = +0.34 V (cathode), Zn²⁺/Zn E° = -0.76 V (anode).
- E°cell = E°cathode - E°anode
- E°cell = 0.34 - (-0.76)
- E°cell = 0.34 + 0.76
- E°cell = 1.10 V