{ "model": { "rank": 5538, "code": "thing-q189520", "model_id": "vr.tr.chemical-equilibrium", "name": "chemical equilibrium", "purpose": "Let an agent explain chemical equilibrium and its thermodynamic basis, relay equilibrium constants and Le Chatelier principle, describe special cases, and support calculation and teaching.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.STA", "industry": "", "version": "", "url": "/models/thing/q189520/", "tier": 2, "score": 66, "payload": { "layer": "wikidata", "aliases": [ "dynamic equilibrium", "Gibbs–Donnan effect", "phase equilibrium", "dissociation equilibrium of weak electrolyte", "Partition equilibrium", "solubility equilibrium", "tautomerism", "keto-enol tautomerism" ], "aliasCount": 8, "merged": 8, "knownIn": 66, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q189520", "url": "https://www.wikidata.org/wiki/Q189520", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-13T00:46:58Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 3, "engine": "claude" }, "metaModel": { "id": "THING-Q189520", "registryId": "vr.tr.chemical-equilibrium", "name": "chemical equilibrium", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.STA" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q189520/", "model": { "registry_id": "vr.tr.chemical-equilibrium", "name": "chemical equilibrium", "purpose": "Let an agent explain chemical equilibrium and its thermodynamic basis, relay equilibrium constants and Le Chatelier principle, describe special cases, and support calculation and teaching.", "definition": "The state of a reversible chemical reaction in which forward and reverse rates are equal so that concentrations of reactants and products remain constant, a dynamic equilibrium described by the equilibrium constant and shifted by changes in concentration, pressure or temperature according to Le Chatelier principle, with special cases including solubility, dissociation of weak electrolytes, partition and phase equilibria and the Gibbs-Donnan effect across membranes; chemical equilibrium underlies acid-base chemistry, industrial synthesis and biochemistry.", "what_it_is_for": "Not applicable; a chemical state.", "affordances": [ "explain the concept and basis", "relay constants and principles", "describe special cases", "support calculation" ], "distinguishing_features": [ "Dynamic balance", "Equilibrium constant", "Le Chatelier response", "Free energy minimum" ], "appearance": "Not a visible object; constant concentrations in a reacting system.", "visual_identification": [ "Balanced forward and reverse reaction rates", "Solubility, dissociation, partition, phase and Donnan equilibria", "A steady state involves constant flow, not equal rates; completion means no reverse reaction" ], "physical_properties": [], "families_and_kinds": [ "homogeneous and heterogeneous equilibria", "acid-base and dissociation equilibria of weak electrolytes", "solubility equilibria", "partition and distribution equilibria", "phase equilibria", "Gibbs-Donnan membrane equilibria", "complexation and redox equilibria" ], "related_models": [ { "relation": "is a kind of", "target": "equilibrium", "why": "in registry terms" }, { "relation": "is a kind of", "target": "steady state", "why": "in registry terms, loosely" }, { "relation": "is described by", "target": "equilibrium constant", "why": "K" }, { "relation": "is governed by", "target": "Gibbs free energy", "why": "minimisation" } ], "identifiers": [], "standards_and_regulation": [ "IUPAC definitions and conventions", "No regulation" ], "failure_modes_and_hazards": [ "Confusing equilibrium with completion or steady state", "Misapplying Le Chatelier to catalysts", "Unit and activity errors in constants" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What equilibrium is.", "rationale": "Science.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What is chemical equilibrium, and why is it dynamic?", "kind": "definition" }, { "text": "Is the system at equilibrium, at steady state or reacting to completion?", "kind": "boundary" } ] } ] }, { "id": "thermodynamics", "name": "Thermodynamics", "description": "Thermodynamic basis.", "findings": [ { "id": "thermodynamics-finding", "name": "Thermodynamics", "description": "Thermodynamics.", "questions": [ { "text": "How do free energy and the equilibrium constant relate?", "kind": "definition" }, { "text": "Which entry fits Gibbs free energy?", "kind": "action" } ] } ] } ] }, { "id": "apply", "name": "Apply", "description": "Principles and calculation.", "rationale": "Practice.", "layers": [ { "id": "lechatelier", "name": "Le Chatelier", "description": "Shifting equilibria.", "findings": [ { "id": "lechatelier-finding", "name": "Le Chatelier", "description": "Le Chatelier.", "questions": [ { "text": "How do changes in concentration, pressure and temperature shift equilibria?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "calculation", "name": "Calculation", "description": "Calculations.", "findings": [ { "id": "calculation-finding", "name": "Calculation", "description": "Calculation.", "questions": [ { "text": "How are equilibrium concentrations calculated from constants, including ICE tables?", "kind": "action" }, { "text": "Which entry fits equilibrium constant?", "kind": "action" } ] } ] } ] }, { "id": "cases", "name": "Cases", "description": "Special cases.", "rationale": "Science.", "layers": [ { "id": "solution", "name": "Solution", "description": "Solution equilibria.", "findings": [ { "id": "solution-finding", "name": "Solution", "description": "Solution.", "questions": [ { "text": "How do acid-base, solubility and partition equilibria work?", "kind": "provenance" }, { "text": "Which entry fits the specific equilibrium?", "kind": "action" } ] } ] }, { "id": "membrane", "name": "Membrane", "description": "Phase and membrane equilibria.", "findings": [ { "id": "membrane-finding", "name": "Membrane", "description": "Membrane.", "questions": [ { "text": "What are phase equilibria and the Gibbs-Donnan effect, and where do they matter?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Industry and history.", "rationale": "Context.", "layers": [ { "id": "industry", "name": "Industry", "description": "Industrial equilibria.", "findings": [ { "id": "industry-finding", "name": "Industry", "description": "Industry.", "questions": [ { "text": "How is equilibrium managed in processes such as ammonia synthesis?", "kind": "provenance" }, { "text": "Which entry fits the Haber process?", "kind": "action" } ] } ] }, { "id": "history", "name": "History", "description": "History.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How did Berthollet, Guldberg, Waage, van t Hoff and Le Chatelier develop the concept?", "kind": "provenance" }, { "text": "Which entry fits the history of chemistry?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should solubility equilibrium and Donnan effect be separate entries?", "How should reference data be linked?", "The registry entry has merged aliases naming special cases; should they be split off?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a chemical equilibrium, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain chemical equilibrium and its thermodynamic basis, relay equilibrium constants and Le Chatelier principle, describe special cases, and support calculation and teaching.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: dynamic equilibrium, Gibbs–Donnan effect, phase equilibrium, dissociation equilibrium of weak electrolyte, Partition equilibrium, solubility equilibrium, tautomerism, keto-enol tautomerism.", "8 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 66 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a chemical equilibrium, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "dynamic equilibrium", "Gibbs–Donnan effect", "phase equilibrium", "dissociation equilibrium of weak electrolyte", "Partition equilibrium", "solubility equilibrium", "tautomerism", "keto-enol tautomerism" ] } ], "standing": "Described in 66 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 8 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one chemical equilibrium from another, and a chemical equilibrium from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a chemical equilibrium, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a chemical equilibrium, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a chemical equilibrium is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a chemical equilibrium, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a chemical equilibrium, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a chemical equilibrium is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a chemical equilibrium sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a chemical equilibrium, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a chemical equilibrium, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a chemical equilibrium is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a chemical equilibrium from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a chemical equilibrium, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a chemical equilibrium, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a chemical equilibrium is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a chemical equilibrium passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a chemical equilibrium between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a chemical equilibrium, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a chemical equilibrium, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a chemical equilibrium is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a chemical equilibrium, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a chemical equilibrium is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a chemical equilibrium, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a chemical equilibrium, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a chemical equilibrium is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What chemical equilibrium is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of chemical equilibrium are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is chemical equilibrium operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of chemical equilibrium and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of chemical equilibrium?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as chemical equilibrium?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a chemical equilibrium came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a chemical equilibrium and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a chemical equilibrium, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a chemical equilibrium, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a chemical equilibrium is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a chemical equilibrium is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a chemical equilibrium, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a chemical equilibrium, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a chemical equilibrium is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }