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A mathematical relation between reaction rate and state variables or species activities, determined by mechanism or experiment rather than overall stoichiometry alone.
source: Has model / approximation; target: Model / approximation of
Authored annotation
represented by a regime-specific rate law
Authored explanation
A rate law is an empirical or mechanism-derived model of chemical kinetics valid over stated composition, temperature, pressure, phase, and transport regimes.
How to interpret this relation type
The target is a model, idealization, restricted ansatz, approximation scheme, phenomenological fit, or historical representation used for the source system or theory. It need not have a universal small error parameter and is not thereby a controlled limit or effective theory. The edge label and detail must identify the precise status.
source: Has model / approximation; target: Model / approximation of
Authored annotation
gas-collision rate model
Authored explanation
For simple gas reactions, collision theory estimates rate coefficients from collision and reaction probabilities.
How to interpret this relation type
The target is a model, idealization, restricted ansatz, approximation scheme, phenomenological fit, or historical representation used for the source system or theory. It need not have a universal small error parameter and is not thereby a controlled limit or effective theory. The edge label and detail must identify the precise status.
This is an authored directed relation from the source endpoint to the target endpoint.
Relation ID
chem_concentration_to_rate_law_theory_component
Relation type
Theory component theory-component
Direction
source → target
Endpoint roles
source: Contributes to; target: Contains theory component
Authored annotation
supplies a kinetic state variable
Authored explanation
Concentrations supply commonly used kinetic variables, while activities, surface coverages, particle numbers, or spatial fields can be required outside dilute well-mixed regimes.
How to interpret this relation type
The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.
Relation sources
Wikipedia — Solution — Solution · encyclopedic reference · source ID wp-chem-solution
OpenStax — Chemistry 2e — Chemistry 2e · peer-reviewed open textbook · source ID openstax-chemistry-2e
source: Describes / governs; target: Described / governed by
Authored annotation
governs elementary-step concentration dependence
Authored explanation
Mass-action kinetics gives elementary-step rates proportional to reactant activities or concentrations under its regime; empirical overall reaction orders need not equal stoichiometric coefficients.
How to interpret this relation type
A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.
source: Describes / governs; target: Described / governed by
Authored annotation
constrains the observed rate form
Authored explanation
Rate control can determine an approximate rate law only with the accompanying mechanistic assumptions; a single slow-step slogan is insufficient when steps are coupled or partially reversible.
How to interpret this relation type
A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.
source: Describes / governs; target: Described / governed by
Authored annotation
implies kinetic form
Authored explanation
A proposed mechanism yields a rate law only after approximations, conservation equations, and initial conditions are stated.
How to interpret this relation type
A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.
source: Has model / approximation; target: Model / approximation of
Authored annotation
statistical barrier-crossing rate
Authored explanation
Transition-state theory connects an activated-complex partition function and free-energy barrier to a rate coefficient.
How to interpret this relation type
The target is a model, idealization, restricted ansatz, approximation scheme, phenomenological fit, or historical representation used for the source system or theory. It need not have a universal small error parameter and is not thereby a controlled limit or effective theory. The edge label and detail must identify the precise status.