A real gas obeying Van der Waals equation will resemble an ideal gas if both a & b are?
Correct answer: A. Small
- A. Small
- B. Large
- C. Equal
- D. None of these options are correct
Explanation
If a and b are small, a/V2 and b can be neglected as compared to P and V and the equation reduces to PV=RT. Hence, a real gas will resemble an ideal gas when the constants a and b are small.
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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
443 free Gases MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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