Jednačina stanja je jednačina koja preko pritiska, temperature i zapremine opisuje ponašanje gasa i izražava se u obliku
Jednačine stanja za posebne modele
- Jednačina stanja idealnog gasa:
![{\displaystyle {\ pV=nRT}.}](https://wikimedia.org/api/rest_v1/media/math/render/svg/1d265b7474ea773feacba0e1b4a7cfba37881403)
- Jednačina stanja Van der Valsovog gasa:
![{\displaystyle {\left(p+{\frac {a}{V_{m}^{2}}}\right)\left(V_{m}-b\right)=RT}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/a9f20b9c91e933c6e7cdfa1af33f0e4ed4e28bc8)
- Redlih-Kvongova (Redlich-Kwong) jednačina stanja:
![{\displaystyle {p={\frac {R\,T}{V_{m}-b}}-{\frac {a}{{\sqrt {T}}\,V_{m}\left(V_{m}+b\right)}}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/95d339996ebb4024ef7846d194295c70d4b81a38)
- Soaova modifikacija Redlih-Kvongove jednačine stanja:
![{\displaystyle p={\frac {R\,T}{V_{m}-b}}-{\frac {a\,\alpha }{V_{m}\left(V_{m}+b\right)}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/185899f8ea770f46da3afde38666be5221c7c12d)
- Peng-Robinsonova jednačina stanja:
![{\displaystyle p={\frac {R\,T}{V_{m}-b}}-{\frac {a\,\alpha }{V_{m}^{2}+2bV_{m}-b^{2}}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/2e4dfc1db20dd48098e4eeb341e4c7631ebb9a19)
- Peng-Robinson-Strajek-Vera (Peng-Robinson-Stryjek-Vera) jednačina stanja:
![{\displaystyle \kappa =\kappa _{0}+\left[\kappa _{1}+\kappa _{2}\left(\kappa _{3}-T_{r}\right)\left(1-T_{r}^{0.5}\right)\right]\left(1+T_{r}^{0.5}\right)\left(0.7-T_{r}\right)}](https://wikimedia.org/api/rest_v1/media/math/render/svg/bbd0e7581498c74d01c11e1ecd006d171deea80e)
- Eliot-Sureš-Donohova (Elliott, Suresh, Donohue) jednačina stanja:
![{\displaystyle {\frac {pV_{m}}{RT}}=Z=1+Z^{\rm {rep}}+Z^{\rm {att}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/544e33aeffedf3abf3d02f12fc03cfef0ac834f7)
- Dietrići (Dieterici) jednačina stanja:
![{\displaystyle \ p(V-b)=RTe^{-a/RTV}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/edf78e3a8b0276811c1eaf8d23f73212c9bff660)
- Virialova jednačina stanja:
![{\displaystyle {\frac {pV_{m}}{RT}}=1+{\frac {B}{V_{m}}}+{\frac {C}{V_{m}^{2}}}+{\frac {D}{V_{m}^{3}}}+\dots }](https://wikimedia.org/api/rest_v1/media/math/render/svg/967d0079dc9b7011c6421aee3527ffdf87b9597e)
- Benedikt-Veb-Rubinova jednačina stanja:
![{\displaystyle p=\rho RT+\left(B_{0}RT-A_{0}-{\frac {C_{0}}{T^{2}}}+{\frac {D_{0}}{T^{3}}}-{\frac {E_{0}}{T^{4}}}\right)\rho ^{2}+\left(bRT-a-{\frac {d}{T}}\right)\rho ^{3}+\alpha \left(a+{\frac {d}{T}}\right)\rho ^{6}+{\frac {c\rho ^{3}}{T^{2}}}\left(1+\gamma \rho ^{2}\right)\exp \left(-\gamma \rho ^{2}\right)}](https://wikimedia.org/api/rest_v1/media/math/render/svg/966373650e993d9eadbdc3367b2155f97e33bd42)
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Literatura
- Elliot & Lira, (1999). Introductory Chemical Engineering Thermodynamics, Prentice Hall.