Under high pressure,which of the following gas show more ideality in character:
Correct answer: A. N2
- A. N2
- B. CO2
- C. NH3
- D. SO2
Explanation
the non ideal behaviour of a gas depends on two factors: 1. intermolecular forces 2. molecular mass Although nitrogen has more molecular mass than ammonia,but the intermolecular forces are not significant that are highly polar in ammonia.therefore,nitrogen shos most ideal behaviour at high pressure.
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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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