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9-29

stoichiometric number of substance

URNurn:iso:std:iso:80000:-9:ed-2:en:item:9-29

https://metanorma.github.io/isq-smart/quantities/part-9/t9-29
urn:iso:std:iso:80000:-9:ed-2:en:item:9-29

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-9:ed-2:en:item:9-29

IEC

urn:iec:std:iec:80000-9:2019:::item:9-29

Designations

ENstoichiometric number of substance

FRnombre stœchiométrique du constituant

Symbol

ν_{B}

Notation systems

Rendered

ν_{B}

AsciiMath

nu_"B"

LaTeX

\nu_{\text{B}}

Definition

for substance $B$ , an integer number or a simple fraction, being negative for a reactant and positive for a product, occurring in the expression for a chemical reaction:

0 = \sum ν_{B}

where the symbol $B$ denotes the reactants and products involved in the reaction

pour le constituant $B$ , nombre entier ou fraction simple, négatif pour un réactif et positif pour un produit, entrant dans l'expression d'une réaction chimique:

0 = \sum ν_{B}

où le symbole $B$ indique les réactifs et les produits intervenant dans la réaction

Units

1

one

View related quantities →

Notes

[example] ====

$(1 / 2) N_{2} + (3 / 2) H_{2} = {NH}_{3}$

$ν (N_{2}) = - 1 / 2$ , $ν (H_{2}) = - 3 / 2$ , $ν ({NH}_{3}) = + 1$ . ====

[example] ====

$(1 / 2) N_{2} + (3 / 2) H_{2} = {NH}_{3}$

$ν (N_{2}) = - 1 / 2$ , $ν (H_{2}) = - 3 / 2$ , $ν ({NH}_{3}) = + 1$ . ====

Referenced by

affinity of a chemical reaction extent of reaction standard equilibrium constant equilibrium constant <pressure basis>equilibrium constant <concentration basis>

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:t9-29

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	9-29
skosxl:prefLabel	"stoichiometric number of substance"@en
skosxl:altLabel	"nu_"B""@en
skos:definition	for substance stem:["B"], an integer number or a simple fraction, being negative for a reactant and positive for a produ…
skos:note	[example] ==== stem:[(1//2)"N"_2 + (3//2)"H"_2 = "NH"_3] stem:[nu ("N"_2) = -1//2], stem:[nu ("H"_2) = -3//2], stem:[nu…
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