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Canonical static concept record

Reaction enthalpy

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Summary

The enthalpy difference between products and reactants in specified stoichiometric amounts and thermodynamic states.

Record metadata

Canonical name: Reaction enthalpy
Concept ID: reaction_enthalpy
Content version: 2.3.0
Primary field: Chemistry
Fields: Chemistry
Primary domain: Chemical thermodynamics & equilibrium
Domains: Chemical thermodynamics & equilibrium
Alternate terminology: No alternate terminology is currently authored for this record.
Concept type: Reaction state-function change

Concept sources

Wikipedia — Chemical thermodynamics — Chemical thermodynamics · encyclopedic reference · source ID wp-chem-chemical-thermodynamics
OpenStax — Chemistry 2e — Chemistry 2e · peer-reviewed open textbook · source ID openstax-chemistry-2e
IUPAC — Quantities, Units and Symbols in Physical Chemistry — Quantities, Units and Symbols in Physical Chemistry · IUPAC physical chemistry reference · source ID iupac-green-book
National Institute of Standards and Technology — Chemistry WebBook — NIST Chemistry WebBook · evaluated chemical data resource · source ID nist-chemistry-webbook

Incoming relations (arrows to this concept)

Each relation below ends at this concept.

Enthalpy Reaction enthalpy

Permalink to relation

This is an authored directed relation from the source endpoint to the target endpoint.

Relation ID: chem_enthalpy_to_reaction_enthalpy_state_description
Relation type: State / property description state-description
Direction: source → target
Endpoint roles: source: Has state / property description; target: State / property description of
Authored annotation: reaction-state difference

Authored explanation

Reaction enthalpy is a stoichiometric difference of state enthalpies at specified conditions.

How to interpret this relation type

The target represents a state, property, observable, or state-dependent description associated with the source system or theory.

Relation sources

Wikipedia — Chemical thermodynamics — Chemical thermodynamics · encyclopedic reference · source ID wp-chem-chemical-thermodynamics
OpenStax — Chemistry 2e — Chemistry 2e · peer-reviewed open textbook · source ID openstax-chemistry-2e
IUPAC — Quantities, Units and Symbols in Physical Chemistry — Quantities, Units and Symbols in Physical Chemistry · IUPAC physical chemistry reference · source ID iupac-green-book
National Institute of Standards and Technology — Chemistry WebBook — NIST Chemistry WebBook · evaluated chemical data resource · source ID nist-chemistry-webbook

Hess’s law Reaction enthalpy

Permalink to relation

This is an authored directed relation from the source endpoint to the target endpoint.

Relation ID: chem_hess_law_to_reaction_enthalpy_describes_governs
Relation type: Describes / governs describes-governs
Direction: source → target
Endpoint roles: source: Describes / governs; target: Described / governed by
Authored annotation: makes thermochemical sums path independent

Authored explanation

Hess cycles compute a reaction enthalpy by adding measured or tabulated state-function changes.

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.

Relation sources

Wikipedia — Chemical thermodynamics — Chemical thermodynamics · encyclopedic reference · source ID wp-chem-chemical-thermodynamics
OpenStax — Chemistry 2e — Chemistry 2e · peer-reviewed open textbook · source ID openstax-chemistry-2e
IUPAC — Quantities, Units and Symbols in Physical Chemistry — Quantities, Units and Symbols in Physical Chemistry · IUPAC physical chemistry reference · source ID iupac-green-book
National Institute of Standards and Technology — Chemistry WebBook — NIST Chemistry WebBook · evaluated chemical data resource · source ID nist-chemistry-webbook

Outgoing relations (arrows from this concept)

Each relation below starts at this concept.