Standard state
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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