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9-25

activity coefficient

URNurn:iso:std:iso:80000:-9:ed-2:en:item:9-25

https://metanorma.github.io/isq-smart/quantities/part-9/t9-25
urn:iso:std:iso:80000:-9:ed-2:en:item:9-25

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-9:ed-2:en:item:9-25

IEC

urn:iec:std:iec:80000-9:2019:::item:9-25

Designations

ENactivity coefficient

FRfacteur d'activité

Symbol

γ_{B}

Notation systems

Rendered

γ_{B}

AsciiMath

gamma_"B"

LaTeX

\gamma_{\text{B}}

Definition

for a solute $B$ in a solution, quotient of activity $a_{B}$ of solute $B$ (activity of solute), and quotient of the molality (molality) $b_{B}$ of substance $B$ and standard molality $b^{& # 8854;}$ :

γ_{B} = \frac{a_{B}}{b_{B} / b^{& # 8854;}}

pour le soluté $B$ dans une solution, quotient de l'activité $a_{B}$ du soluté $B$ (activity of solute) par le quotient de la molalité (molality) $b_{B}$ du soluté $B$ par la molalité de référence $b^{& # 8854;}$ :

γ_{B} = \frac{a_{B}}{b_{B} / b^{& # 8854;}}

Units

1

one

View related quantities →

Notes

The name "activity coefficient of solute $B$ " is also used for the quantity $γ_{B}$ defined as:

γ_{B} = \frac{a_{c, B}}{c_{B} / c^{& # 8854;}}

See activity factor.

Le nom «facteur d'activité du soluté B» est aussi utilisé pour la grandeur $γ_{B}$ définie par:

γ_{B} = \frac{a_{c, B}}{c_{B} / c^{& # 8854;}}

Voir activity factor.

Referenced by

activity factor

Concept HierarchyPendrill (2024)

1dimensionless quantitiesLevel 0 · Kind

Broader concepts

◇ dimensionless quantities

Characterizes

● solute● solution● 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:t9-25

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	9-25
skosxl:prefLabel	"activity coefficient"@en
skosxl:altLabel	"gamma_"B""@en
skos:definition	for a solute stem:["B"] in a solution, quotient of activity stem:[a_"B"] of solute stem:["B"] (<<t9-24>>), and quotient …
skos:note	The name "activity coefficient of solute stem:["B"]" is also used for the quantity stem:[gamma_"B"] defined as: [stem%u…
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