Property talk:P1117

Documentation

• Start a query
• Current uses
• Statistics by class
• Units
• Scale of values
• List of qualifiers
• Count

pKa
acid dissociation constant

Represents	acid dissociation constant (Q325519)
Data type	Quantity
Template parameter	en, fr and de infoboxes about chemicals
Domain	According to this template: chemical compound (Q11173) - acids and bases in solution According to statements in the property: chemical substance (Q79529) When possible, data should only be stored as statements
Allowed values	According to this template: scalar index ranging from -14 to +14 According to statements in the property: −14 ≤ 𝓧 ≤ 14 When possible, data should only be stored as statements
Allowed units	not applicable
Example	hydrogen fluoride (Q2468) → 3.17 adenosine monophosphate (Q318369) → 3.8
Tracking: usage	Category:Pages using Wikidata property P1117 (Q26250043)
See also	pH value (P9440)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Minimum and maximum Items with highest numeric value Items with lowest numeric value Database reports/Constraint violations/P1117 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 257 Main statement 255 99.2% of uses Qualifier 2 0.8% of uses

[create Create a translatable help page (preferably in English) for this property to be included here]

Type “chemical substance (Q79529)”: item must contain property “subclass of (P279)” with classes “chemical substance (Q79529)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1117#Type Q79529, SPARQL

Required qualifier “temperature (P2076)”: this property should be used with the listed qualifier. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1117#mandatory qualifier, SPARQL

Range from “-14” to “14”: values should be in the range from “-14” to “14”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: acetamide (Q421721)
List of violations of this constraint: Database reports/Constraint violations/P1117#Range

Units: “novalue”: value unit must be one of listed. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1117#Units

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P1117#Scope, hourly updated report, SPARQL

Citation needed: the property must have at least one reference (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P1117#citation needed

This property is being used by: ru:Шаблон:Изомеры, ru:Шаблон:Вещество es:Plantilla:Ficha de compuesto químico, es:Plantilla:Ficha de compuesto químico/pruebas2 hy:Կաղապար:Տեղեկաքարտ Նյութ be-x-old:Шаблён:Рэчыва tg:Шаблон:Моддаи кимиёӣ ca:Plantilla:Infotaula compost químic eu:Txantiloi:Konposatu kimiko infotaula/probak, eu:Txantiloi:Konposatu kimiko infotaula cs:Šablona:Infobox - léčivá látka ha:Template:Infobox chemical incubator:Template:Wp/shi/Infobox chemical kab:Talɣa:Infobox chemical shi:Talɣa:Infobox chemical ga:Teimpléad:WD Bosca Sonraí Comhdhúil Cheimiceach ff:Template:Infobox chemical be-tarask:Шаблён:Рэчыва gv:Clowan:WD Kishtey Fys Co-vunstoo Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)