The actual volume of gas molecules is considered negligible at following pressures:
Correct answer: A. 1 atm
- A. 1 atm
- B. 4 atm
- C. 6 atm
- D. 8 atm
Explanation
The actual volume of the molecules of a gas is usually very small as compared to the volume of the vessel and hence it can be neglected. This volume, however, does not remain negligible when the gas is subjected to high pressure." (Section 3.10.1, gases)
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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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