21. Kinetic Theory of Ideal Gases
The Ideal Gas Law
12:19 minutes
Problem 18.77a
Textbook Question
Textbook Question(a) From the van der Waals equation of state, show that the critical temperature and pressure are given by
T꜀ᵣ = 8a / 27bR , P꜀ᵣ = a / 27b² .
[Hint: Use the fact that the P versus V curve has an inflection point at the critical point so that the first and second derivatives are zero.]
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