In the derivation of the van der Waals equation, the excluded volume (co-volume) '' for of a gas is mathematically related to the actual physical volume () of the gas molecules by:

Question

In the derivation of the van der Waals equation, the excluded volume (co-volume) '$b$' for $1	ext{ mole}$ of a gas is mathematically related to the actual physical volume ($V_{actual}$) of the gas molecules by:

Prashant Kotian · Accepted Answer

Correct answer: C. Due to the collision sphere geometry, the excluded volume for a pair of molecules is 8 times their physical volume. Averaged over 1 mole, the effective excluded volume '' becomes exactly 4 times the actual total spherical volume of the molecules.

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