The phenomenon of cooling on sudden expansion of gases is called:
Correct answer: B. Joule Thomson effect
- A. Bronstect effect
- B. Joule Thomson effect
- C. Graham's effect
- D. Dalton's effect
Explanation
Therefore, the correct term is the "Joule-Thomson effect," which describes the cooling observed when a gas expands rapidly without any external work being done on it. The phenomenon of cooling on sudden expansion of gases is called the "Joule-Thomson effect."
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About Real and Ideal Gases
An ideal gas is modelled as particles with negligible volume and no intermolecular attraction, obeying Boyle's, Charles's and Avogadro's laws through PV = nRT. Real gases deviate from this behaviour, especially at high pressure and low temperature, because particle volume and attractive forces matter; the van der Waals equation explains these corrections.
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