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9-23

standard absolute activity

URNurn:iso:std:iso:80000:-9:ed-2:en:item:9-23

https://metanorma.github.io/isq-smart/quantities/part-9/t9-23
urn:iso:std:iso:80000:-9:ed-2:en:item:9-23

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-9:ed-2:en:item:9-23

IEC

urn:iec:std:iec:80000-9:2019:::item:9-23

Designations

ENstandard absolute activity

FRactivité absolue normale

Symbol

λ_{X}^{& # 8854;}

Notation systems

Rendered

λ_{X}^{& # 8854;}

AsciiMath

lambda_"X"^(⊖)

LaTeX

\lambda_{\text{X}}^{\& \# 8854 ;}

Definition

for substance $X$ in a liquid or a solid mixture, absolute activity $λ_{X}^{*}$ (absolute activity) of the pure substance $X$ at the same temperature (ISO 80000-5: Thermodynamics) but at standard pressure (ISO 80000-4: Mechanics) $10^{5} unitsml(Pa)$ :

λ_{X}^{& # 8854;} = λ_{X}^{*} (p^{& # 8854;})

pour le constituant $X$ dans un mélange liquide ou solide, activité absolue $λ_{X}^{*}$ (absolute activity) du constituant pur $X$ à la même température (ISO 80000-5: Thermodynamics), mais à la pression de référence (ISO 80000-4: Mechanics) $10^{5} unitsml(Pa)$ :

λ_{X}^{& # 8854;} = λ_{X}^{*} (p^{& # 8854;})

Units

1

one

View related quantities →

Notes

This quantity is a function of temperature only.

Cette grandeur n'est fonction que de la température.

Referenced by

standard absolute activity of solvent <in a dilute solution>

Concept HierarchyPendrill (2024)

1dimensionless quantitiesLevel 0 · Kind

Broader concepts

◇ dimensionless 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:t9-23

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	9-23
skosxl:prefLabel	"standard absolute activity <in a mixture>"@en
skosxl:altLabel	"lambda_"X"^(⊖)"@en
skos:definition	for substance stem:[X] in a liquid or a solid mixture, absolute activity stem:[lambda_"X"^(**)] (<<t9-18>>) of the pure …
skos:note	This quantity is a function of temperature only.
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