Standard state

From Biocrawler, the free encyclopedia.

In chemistry, the standard state of a material is its state at 1 bar (100.000 kilopascals) and 25 degrees Celsius (298.15 kelvin). When the standard state is referred to in a chemical reaction, it also includes the condition that all solutions are at 1 mol/L or 1 mol/kg.

For a given material or substance, the standard state is the reference state for the material's thermodynamic state properties such as enthalpy, entropy, Gibbs free energy, and for a lot of other material standards.

See also : Standard temperature and pressure aka STP

External links

• Standard-state enthalpies (http://www.nyu.edu/classes/tuckerman/honors.chem/lectures/lecture_15/node9.html)

nl:Standaard omstandigheden pl:Warunki standardowe pt:Condições normais

Wikipedia (http://en.wikipedia.org/wiki/Main_Page) Standard_state (http://en.wikipedia.org/wiki/Standard_state) version history (http://en.wikipedia.org/w/index.php?title=Standard_state&action=history) GNU Free Documentation Lizenz (http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License) CC-by-sa (http://creativecommons.org/licenses/by-sa/2.5/)

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