Topic: Dynamic equilibrium and physical equilibria, Henry's law· Equilibrium

The correction factor 'a' to the ideal gas equation corresponds to

1. density of the gas molecules

2. electric field present between the gas molecules

3. volume of the gas molecules

4. forces of attraction between the gas molecules

Doubtly Asked 30 Oct 2026 NEET UG 2018 neet Save WhatsApp Report

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Answer: 4. forces of attraction between the gas molecules

In the van der Waals equation \(\left(P+\dfrac{an^2}{V^2}\right)(V-nb)=nRT\), the term \(a\) corrects the pressure for intermolecular attraction (molecules hit the wall less strongly). The constant \(b\) corrects for the finite volume of molecules.

So \(a\) corresponds to forces of attraction between molecules.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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The correction factor 'a' to the ideal gas equation corresponds to

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