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9-18

absolute activity

URNurn:iso:std:iso:80000:-9:ed-2:en:item:9-18

https://metanorma.github.io/isq-smart/quantities/part-9/t9-18
urn:iso:std:iso:80000:-9:ed-2:en:item:9-18

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-9:ed-2:en:item:9-18

IEC

urn:iec:std:iec:80000-9:2019:::item:9-18

Designations

ENabsolute activity

FRactivité absolue

Symbol

λ_{X}

Notation systems

Rendered

λ_{X}

AsciiMath

lambda_"X"

LaTeX

\lambda_{\text{X}}

Definition

for substance $X$ , exponential of quotient of chemical potential $μ_{X}$ of substance $B$ (chemical potential <chemistry>), and product of molar gas constant $R$ (molar gas constant) and thermodynamic temperature $T$ (ISO 80000-5: Thermodynamics):

λ_{X} = exp (\frac{μ_{X}}{R T})

pour le constituant $X$ , exponentielle du quotient du potentiel chimique $μ_{X}$ (chemical potential <chemistry>) du constituant $B$ par le produit de la constante molaire des gaz $R$ (molar gas constant) et de la température thermodynamique $T$ (ISO 80000-5: Thermodynamics):

λ_{X} = exp (\frac{μ_{X}}{R T})

Units

1

one

View related quantities →

Referenced by

fugacity activity factor standard absolute activity <in a mixture>activity of solute activity of solvent grand-canonical partition function

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:t9-18

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	9-18
skosxl:prefLabel	"absolute activity"@en
skosxl:altLabel	"lambda_"X""@en
skos:definition	for substance stem:["X"], exponential of quotient of chemical potential stem:[mu_"X"] of substance stem:["B"] (<<t9-17>>…
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