The least value of Van der Waals constant is of _.
Correct answer: A. H2
- A. H2
- B. N2
- C. CO2
- D. Cl
Explanation
The least value of van der waal cont is of H2 because of its small size and non polar character i.e, 0.245 atm dm3/mol.
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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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