Sackur–Tetrode equation
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The Sackur–Tetrode equation provides the entropy () of an ideal gas (classical). It is given by
![{\displaystyle S=Nk_{B}\ln \left[\left({\frac {2\pi mk_{B}T}{h^{2}}}\right)^{3/2}{\frac {k_{B}T}{p}}\exp(5/2)\right]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/29870a21df3d2ea505707b74854ebed43770f68b)
where is the Boltzmann constant, is the temperature, is the pressure, is the mass of the gas particle, is the numer of particles and is the Planck constant.
References[edit]
- O. Sackur "Die universelle Bedeutung des sog. elementaren Wirkungsquantums", Annalen der Physik 40 pp. 67-86 (1913)
- H. Tetrode "Die chemische Konstante der Gase und das elementare Wirkungsquantum", Annalen der Physik 38 pp. 434-442 (1912)
- H. Tetrode "Berichtigung zu meiner Arbeit: 'Die chemische Konstante der Gase und das elementare Wirkungsquantum'", Annalen der Physik 39 pp. 255-256 (1913)