Under what conditions the gases deviate from the ideal behavior ?
Correct answer: D. B and C
- A. High temperature
- B. Low temperature
- C. High pressure
- D. B and C
Explanation
Real gases deviate most from ideal behaviour at low temperature and high pressure. Low temperature increases the effect of intermolecular attractions, while high pressure makes the finite volume of molecules significant. Students may choose a because heating can produce expansion, but high temperature generally makes gases behave more ideally.
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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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