Which gas among them shows maximum ideal behavior?
Correct answer: C. Helium
- A. Ammonia
- B. Hydrogen
- C. Helium
- D. Radon
Explanation
OPTION A: Ammonia deviates from ideal behavior due to its molecular structure and hydrogen bonding, which influences its behavior.OPTION B: Hydrogen shows some deviation from the ideal behavior due to its low critical temperature and pressure and the influence of intermolecular forces such as hydrogen bonding.OPTION C: Helium is the closest to an ideal gas because unlike other gases helium exists as a single atom, which makes the van der Waals dispersion forces as low as possible. OPTION D: Radon does not show maximum ideal behavior because it has a high molecular weight and is influenced by intermolecular forces such as van der Waals forces.
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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.
Practise Gases
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