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Section 9-354 entries

9-35.1microcanonical partition function 9-35.2canonical partition function 9-35.3grand-canonical partition function, grand partition function 9-35.4molecular partition function, partition function of a molecule

9-35.4

molecular partition function, partition function of a molecule

URNurn:iso:std:iso:80000:-9:ed-2:en:item:9-35.4

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-9/t9-35.4
urn:iso:std:iso:80000:-9:ed-2:en:item:9-35.4

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-9:ed-2:en:item:9-35.4

IEC

urn:iec:std:iec:80000-9:2019:::item:9-35.4

Designations

ENmolecular partition function

FRfonction de partition moléculaire

ENpartition function of a molecule

FRfonction de partition d'une molécule

Symbol

q

Notation systems

Rendered

q

AsciiMath

q

LaTeX

q

Definition

quantity given by:

q = \sum_{r} exp (\frac{- ε_{r}}{k T})

where $ε_{r}$ is the energy (ISO 80000-5: Thermodynamics) of the $r$ -th level of the molecule consistent with given volume (ISO 80000-3: Space and time) and external fields, $k$ is the Boltzmann constant (ISO 80000-1), and $T$ is thermodynamic temperature (ISO 80000-5: Thermodynamics)

grandeur donnée par:

q = \sum_{r} exp (\frac{- ε_{r}}{k T})

où $ε_{r}$ est l'énergie (ISO 80000-5: Thermodynamics) du $r$ ^ème^ niveau de la molécule compatible avec les valeurs données du volume (ISO 80000-3: Space and time) et des champs extérieurs, $k$ est la constante de Boltzmann (ISO 80000-1) et $T$ est la température thermodynamique (ISO 80000-5: Thermodynamics)

Units

1

one

View related quantities →

Concept HierarchyPendrill (2024)

1dimensionless quantitiesLevel 0 · Kind

Broader concepts

◇ dimensionless quantities

Characterizes

● molecule

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t9-35.4

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	9-35.4
skosxl:prefLabel	"molecular partition function"@en
skosxl:altLabel	"partition function of a molecule"@en"q"@en
skos:definition	quantity given by: [stem%unnumbered] ++++ q = sum_r "exp" ((-epsilon_r)/(kT)) ++++ where stem:[epsilon_r] is the energ…
isq:hasUnit	1 (one)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-9

Related Entities

isq:QuantityShape isq:part-9 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry