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9-20

fugacity

URNurn:iso:std:iso:80000:-9:ed-2:en:item:9-20

https://metanorma.github.io/isq-smart/quantities/part-9/t9-20
urn:iso:std:iso:80000:-9:ed-2:en:item:9-20

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-9:ed-2:en:item:9-20

IEC

urn:iec:std:iec:80000-9:2019:::item:9-20

Designations

ENfugacity

FRfugacité

Symbol

{\tilde{p}}_{X}

Notation systems

Rendered

{\tilde{p}}_{X}

AsciiMath

tilde p_"X"

LaTeX

\tilde{p}_{\text{X}}

Definition

for substance $X$ , quantity proportional to the absolute activity, $λ_{X}$ (absolute activity), the proportionality factor, which is a function of temperature (ISO 80000-5: Thermodynamics) only, being determined by the condition that, at constant temperature and composition, $p_{X} / {\tilde{p}}_{X}$ tends to 1 for an indefinitely dilute gas

pour le constituant $X$ , grandeur proportionnelle à l'activité absolue, tem:[lambda_"X"] (absolute activity), le facteur de proportionnalité, qui est seulement fonction de la température (ISO 80000-5: Thermodynamics), étant déterminé par la condition que, pour une dilution infinie du gaz à température et composition constantes, $p_{X} / {\tilde{p}}_{X}$ tend vers 1

Units

P a

pascal

View related quantities →

k g \cdot m^{- 1} \cdot s^{- 2}

kilogram per metre second squared

View related quantities →

Notes

IUPAC preferred symbol is $f$ .

{\tilde{p}}_{X} = λ_{X} \cdot lim_{p \to 0} (p_{X} / λ_{X})

where $p$ is total pressure (ISO 80000-4: Mechanics).

The IUPAC preferred symbol for fugacity is $f$ .

{\tilde{p}}_{X} = λ_{X} \cdot lim_{p \to 0} (p_{X} / λ_{X})

où $p$ est la pression (ISO 80000-4: Mechanics) totale.

Le symbole préférentiel de l'IUPAC pour la fugacité est $f$ .

Concept HierarchyPendrill (2024)

L⁻¹ M T⁻²pressure-type quantitiesLevel 0 · Kind

Broader concepts

◇ pressure-type quantities

Characterizes

● substance

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:t9-20

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	9-20
skosxl:prefLabel	"fugacity"@en
skosxl:altLabel	"tilde p_"X""@en
skos:definition	for substance stem:["X"], quantity proportional to the absolute activity, stem:[lambda_"X"] (<<t9-18>>), the proportiona…
skos:note	IUPAC preferred symbol is stem:[f]. [stem%unnumbered] ++++ tilde p_"X" = lambda_"X" * lim_(p -> 0)(p_"X"//lambda_"X") +…
isq:hasUnit	Pa (pascal)kgm^(-1)s^(-2) (kilogram per metre second squared)
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