Behavior of Gases Byeong-Joo Lee Thermodynamics POSTECH - MSE

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Presentation transcript:

Behavior of Gases Byeong-Joo Lee Thermodynamics POSTECH - MSE calphad@postech.ac.kr

Equation of State - Real Gases ▷ as p → 0 ▷ Critical Point

Equation of State - Real Gases: Compressibility factor Z @ 0 oC

Law of Corresponding States Reduced variables

van der Waals Gas - Basic Concept The particles of a real gas occupy a finite volume The particles of a real gas have mutual interactions

van der Waals Gas Prove that the van der Waals gases follow the law of corresponding states

van der Waals constants for real gases

Isothermal behavior of van der Waals gases

van der Waals behavior - example: CO2

※ Other EOS: Virial Equation van der Waals behavior - Heat of Evaporation ※ Other EOS: Virial Equation