Description
Return molar redox free-energy change and charge.
Biochemical amounts, ionization and free energies depend on units, standard states, activities and molecular composition. A supplied concentration ratio or independent-group formula is one local model relation rather than a complete equilibrium or verified molecular characterization.
Return molar redox free-energy change and charge.
When to use this tool
Use Biochemical Redox Electron Count Factor when checking the stated biochemical amount, charge, equilibrium or material-basis convention.
How to use the tool and how it works
- Enter electrons, faraday, potentialDifference. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read molarFreeEnergy, chargePerMole. Use the output convention below.
Return molar redox free-energy change and charge. Require positive whole electron count and faraday > 0; chargePerMole = electrons*F, molarFreeEnergy = -electrons*F*potentialDifference.1
Reaction free energy, equilibrium constants and redox potentials depend on consistent reaction and standard-state conventions. A local formula does not determine an actual equilibrium composition.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| electrons | Electrons | Required. Safe integer; minimum 1. |
| faraday | Faraday | Required. Finite number; strictly above 0. |
| potentialDifference | Potential Difference | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| molarFreeEnergy | Molar Free Energy | Required. Finite number. |
| chargePerMole | Charge Per Mole | Required. Finite number. |
{
"input": {
"electrons": 2,
"faraday": 100000,
"potentialDifference": 0.2
},
"output": {
"molarFreeEnergy": -40000,
"chargePerMole": 200000
}
}Limitations and assumptions
- Potential direction and per-mole reaction convention must agree; actual redox potential, speciation and reaction viability are not established.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use compatible standard states, verified chemical identity and an appropriate complete activity/speciation or measurement model for physical interpretation.
References
Similar or alternative tools
- Biochemical Standard State Concentration Factor
Return a dimensionless standard-state concentration proxy and power.
- Reaction Equilibrium Free Energy Term
Return reaction free energy and standard equilibrium constant.