Wikidata:Property proposal/Standard enthalpy of formation
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Standard_enthalpy_of_formation[edit]
Originally proposed at Wikidata:Property proposal/Natural science
| Description | The standard enthalpy of formation is the change of enthalpy during the formation of 1 mole of the compound from its constituent elements, with all substances in their standard states at 1 bar and 25°C |
|---|---|
| Represents | standard enthalpy of formation (Q721706) |
| Data type | Number (not available yet) |
| Domain | chemicals |
| Allowed units | joule per mole (Q13035094), kilojoule per kilogram (Q21077849), kilojoule per mole (Q752197) |
| Example | ethanol (Q153) → −277.0 kJ/mol, liquid. Phase has to be specify as qualifier using phase of matter (P515). Temperature and pressure are defined as standard so no need to indicate them. |
| Source | Any handbook of chemistry |
- Motivation
Complete the properties to describe chemicals. Snipre (talk) 11:31, 16 July 2016 (UTC)
- Discussion
Support, but std enthalpy of formation is not always given for 1 atm, as it's not standard pressure since 1982. For example, CRC Handbook of Chemistry and Physics (95th edition) (Q20887890) contains two tables of standard thermodynamic properties, both with standard pressure 100 kPa/1 bar. ∼Wostr (talk) 19:10, 21 July 2016 (UTC)
@Snipre, Wostr:
Done Now standard enthalpy of formation (P3078). --Lymantria (talk) 07:54, 11 August 2016 (UTC)