Nernst equation
E183515
The Nernst equation is a fundamental electrochemistry formula that relates the reduction potential of a half-cell to the standard electrode potential, temperature, and activities (or concentrations) of the chemical species involved.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Nernst equation canonical | 2 |
| Latimer diagrams | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1615006 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Nernst equation Context triple: [Walther Nernst, notableWork, Nernst equation]
-
A.
Faraday constant
The Faraday constant is a fundamental physical constant representing the electric charge carried by one mole of electrons, widely used in electrochemistry and physics.
-
B.
Cottrell equation
The Cottrell equation is a fundamental relation in electrochemistry that describes how current decays over time during a diffusion-controlled potential step at an electrode.
-
C.
Shockley diode equation
The Shockley diode equation is a fundamental formula in semiconductor physics that describes the current–voltage relationship of an ideal p–n junction diode.
-
D.
laws of electrolysis
The laws of electrolysis are fundamental quantitative rules in electrochemistry that relate the amount of substance produced or consumed at an electrode to the total electric charge passed through an electrolyte.
-
E.
Mulliken electronegativity scale
The Mulliken electronegativity scale is a quantitative measure of an atom’s tendency to attract electrons, defined as the average of its ionization energy and electron affinity.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Nernst equation Target entity description: The Nernst equation is a fundamental electrochemistry formula that relates the reduction potential of a half-cell to the standard electrode potential, temperature, and activities (or concentrations) of the chemical species involved.
-
A.
Faraday constant
The Faraday constant is a fundamental physical constant representing the electric charge carried by one mole of electrons, widely used in electrochemistry and physics.
-
B.
Cottrell equation
The Cottrell equation is a fundamental relation in electrochemistry that describes how current decays over time during a diffusion-controlled potential step at an electrode.
-
C.
Shockley diode equation
The Shockley diode equation is a fundamental formula in semiconductor physics that describes the current–voltage relationship of an ideal p–n junction diode.
-
D.
laws of electrolysis
The laws of electrolysis are fundamental quantitative rules in electrochemistry that relate the amount of substance produced or consumed at an electrode to the total electric charge passed through an electrolyte.
-
E.
Mulliken electronegativity scale
The Mulliken electronegativity scale is a quantitative measure of an atom’s tendency to attract electrons, defined as the average of its ionization energy and electron affinity.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
electrochemistry equation
ⓘ
thermodynamic relation ⓘ |
| appliesTo |
concentration cells
ⓘ
electrochemical half-cells ⓘ galvanic cells ⓘ |
| assumes |
reversible electrode reactions
ⓘ
thermodynamic equilibrium at electrode ⓘ |
| dependsOn |
Faraday constant
ⓘ
gas constant ⓘ number of electrons transferred ⓘ reaction quotient ⓘ temperature ⓘ |
| derivedFrom |
Gibbs free energy relation ΔG = −nFE
ⓘ
ΔG = ΔG° + RT ln Q ⓘ |
| expresses | electrode potential as function of activities ⓘ |
| field |
electrochemistry
ⓘ
physical chemistry ⓘ |
| hasForm |
E = E° − (0.05916 V/n) log10 Q at 25 °C
ⓘ
E = E° − (2.303 RT/nF) log10 Q ⓘ E = E° − (RT/nF) ln Q ⓘ |
| hasVariant | base-10 logarithm form ⓘ |
| implies |
E = 0 at equilibrium
ⓘ
E° = (RT/nF) ln K at equilibrium ⓘ |
| namedAfter | Walther Nernst ⓘ |
| relatedTo |
Goldman–Hodgkin–Katz equation
ⓘ
equilibrium constant ⓘ reaction quotient ⓘ standard electrode potential ⓘ |
| relates |
cell potential to reaction quotient
ⓘ
electrode potential to ion activities ⓘ reduction potential to standard electrode potential ⓘ |
| specialCaseAt | 298.15 K ⓘ |
| usedFor |
calculating cell voltages
ⓘ
calculating electrode potentials ⓘ predicting direction of redox reactions ⓘ relating Gibbs free energy to cell potential ⓘ |
| usedIn |
battery chemistry
ⓘ
biophysical membrane potentials ⓘ corrosion science ⓘ ion-selective electrode calibration ⓘ pH measurement ⓘ |
| usesBase | natural logarithm ⓘ |
| usesSymbol |
E for electrode potential
ⓘ
E° for standard electrode potential ⓘ F for Faraday constant ⓘ Q for reaction quotient ⓘ R for gas constant ⓘ T for absolute temperature ⓘ n for number of electrons ⓘ |
| validAt | any absolute temperature ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Nernst equation Description of subject: The Nernst equation is a fundamental electrochemistry formula that relates the reduction potential of a half-cell to the standard electrode potential, temperature, and activities (or concentrations) of the chemical species involved.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Latimer diagrams