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Standard state
In chemistry, the standard state of a material is its state at 1 standard atmosphere (101.325 kilopascals) and 25 degrees Celsius (298.15 kelvins). 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
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10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details