Debye–Hückel theory
E518985
Debye–Hückel theory is a foundational model in physical chemistry that explains how electrostatic interactions between ions in solution affect properties such as activity coefficients and equilibrium behavior in electrolytes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Debye–Hückel theory canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5420107 — 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: Debye–Hückel theory Context triple: [Peter Debye, knownFor, Debye–Hückel theory]
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A.
Nernst–Planck equation
The Nernst–Planck equation is a fundamental relation in electrochemistry that describes the flux of charged species under the combined influence of diffusion, electric fields, and, in extended forms, convection.
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B.
Gibbs–Duhem equation
The Gibbs–Duhem equation is a fundamental thermodynamic relation that links changes in chemical potential, temperature, and pressure for multicomponent systems, ensuring consistency among intensive variables.
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C.
Butler–Volmer equation
The Butler–Volmer equation is a fundamental relation in electrochemistry that describes how the rate of an electrode reaction (current density) depends on the electrode potential and reaction kinetics.
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D.
On the Equilibrium of Heterogeneous Substances
On the Equilibrium of Heterogeneous Substances is a foundational 1876–1878 treatise in thermodynamics by Josiah Willard Gibbs that introduced key concepts of chemical thermodynamics and phase equilibrium, including the Gibbs free energy.
-
E.
Nernst equation
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.
- 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: Debye–Hückel theory Target entity description: Debye–Hückel theory is a foundational model in physical chemistry that explains how electrostatic interactions between ions in solution affect properties such as activity coefficients and equilibrium behavior in electrolytes.
-
A.
Nernst–Planck equation
The Nernst–Planck equation is a fundamental relation in electrochemistry that describes the flux of charged species under the combined influence of diffusion, electric fields, and, in extended forms, convection.
-
B.
Gibbs–Duhem equation
The Gibbs–Duhem equation is a fundamental thermodynamic relation that links changes in chemical potential, temperature, and pressure for multicomponent systems, ensuring consistency among intensive variables.
-
C.
Butler–Volmer equation
The Butler–Volmer equation is a fundamental relation in electrochemistry that describes how the rate of an electrode reaction (current density) depends on the electrode potential and reaction kinetics.
-
D.
On the Equilibrium of Heterogeneous Substances
On the Equilibrium of Heterogeneous Substances is a foundational 1876–1878 treatise in thermodynamics by Josiah Willard Gibbs that introduced key concepts of chemical thermodynamics and phase equilibrium, including the Gibbs free energy.
-
E.
Nernst equation
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
electrolyte solution model
ⓘ
physical chemistry theory ⓘ |
| appliesTo | dilute electrolyte solutions ⓘ |
| assumes |
continuum dielectric solvent
ⓘ
linearized Poisson–Boltzmann equation ⓘ point-like ions ⓘ thermal equilibrium ⓘ |
| basedOn |
Coulomb’s law
NERFINISHED
ⓘ
Poisson–Boltzmann equation NERFINISHED ⓘ |
| coreConcept |
electrostatic screening
ⓘ
ionic atmosphere ⓘ ionic strength dependence of activities ⓘ mean activity coefficient ⓘ |
| describes |
activity coefficients of ions
ⓘ
electrostatic interactions between ions in solution ⓘ ionic atmosphere around an ion ⓘ mean ionic activity coefficient ⓘ non-ideality of electrolyte solutions ⓘ screening of electrostatic interactions in electrolytes ⓘ |
| explains |
dependence of activity coefficients on ionic strength
ⓘ
deviation from ideal solution behavior in electrolytes ⓘ |
| field |
electrochemistry
ⓘ
physical chemistry ⓘ solution chemistry ⓘ |
| hasFormulation |
Debye–Hückel limiting law
NERFINISHED
ⓘ
extended Debye–Hückel equation ⓘ |
| hasLimitation |
assumes uniform dielectric constant
ⓘ
neglects finite ion size ⓘ neglects ion-specific short-range interactions ⓘ valid only at low ionic strength ⓘ |
| influenced |
development of Pitzer equations
ⓘ
extended electrolyte models ⓘ |
| introduces |
Debye parameter kappa
NERFINISHED
ⓘ
Debye screening length NERFINISHED ⓘ ionic strength concept ⓘ |
| namedAfter |
Erich Hückel
NERFINISHED
ⓘ
Peter Debye NERFINISHED ⓘ |
| predicts |
activity coefficient decreases with increasing ionic strength at low ionic strength
ⓘ
logarithm of activity coefficient proportional to square of ion charge ⓘ |
| relatedTo |
Bjerrum ion-pair theory
NERFINISHED
ⓘ
Gouy–Chapman theory NERFINISHED ⓘ Pitzer model NERFINISHED ⓘ Poisson–Boltzmann theory NERFINISHED ⓘ |
| usedFor |
calculating activity coefficients in electrolyte solutions
ⓘ
estimating mean ionic activity coefficients from ionic strength ⓘ interpreting equilibrium constants in ionic solutions ⓘ interpreting solubility of electrolytes ⓘ modeling acid–base equilibria in ionic media ⓘ |
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: Debye–Hückel theory Description of subject: Debye–Hückel theory is a foundational model in physical chemistry that explains how electrostatic interactions between ions in solution affect properties such as activity coefficients and equilibrium behavior in electrolytes.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.