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  2. Redlich–Kwong equation of state - Wikipedia

    en.wikipedia.org/wiki/RedlichKwong_equation_of...

    The RedlichKwong equation is very similar to the Van der Waals equation, with only a slight modification being made to the attractive term, giving that term a temperature dependence. At high pressures, the volume of all gases approaches some finite volume, largely independent of temperature, that is related to the size of the gas molecules.

  3. Real gas - Wikipedia

    en.wikipedia.org/wiki/Real_gas

    Critical isotherm for Redlich-Kwong model in comparison to van-der-Waals model and ideal gas (with V 0 =RT c /p c) The RedlichKwong equation is another two-parameter equation that is used to model real gases. It is almost always more accurate than the van der Waals equation, and often more accurate than some equations with more than two ...

  4. Cubic equations of state - Wikipedia

    en.wikipedia.org/wiki/Cubic_equations_of_state

    The cubic-plus-association (CPA) equation of state combines the Soave–RedlichKwong equation with the association term from SAFT [21] [22] based on Chapman's extensions and simplifications of a theory of associating molecules due to Michael Wertheim. [23]

  5. PSRK - Wikipedia

    en.wikipedia.org/wiki/PSRK

    The Soave–RedlichKwong equation of state describes the vapor densities of pure components and mixtures quite well, but the deviations of the liquid-density prediction are high. For the VLE prediction of mixtures with components that have very differing sizes (e. g. ethanol, C 2 H 6 O, and eicosane, C 20 H 42) larger systematic errors are ...

  6. Thermodynamic modelling - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_modelling

    The most famous functional forms of this category are Redlich-Kwong, [3] Soave-Redlich-Kwong [4] and Peng-Robinson. [5] Although their initial form is empirically suggested, they are categorised as semi-empirical models as their parameters can be adjusted to fit the real experimental measurement data of the target system.

  7. Category:Equations of state - Wikipedia

    en.wikipedia.org/wiki/Category:Equations_of_state

    Download as PDF; Printable version; ... Pages in category "Equations of state" The following 18 pages are in this category, out of 18 total. ... RedlichKwong ...

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  9. Equation of state - Wikipedia

    en.wikipedia.org/wiki/Equation_of_state

    Hence, all cubic equations of state can be considered 'modified van der Waals equation of state'. There is a very large number of such cubic equations of state. For process engineering, cubic equations of state are today still highly relevant, e.g. the Peng Robinson equation of state or the Soave Redlich Kwong equation of state.