In the van der Waals equation of real gases, what does the parameter 'b' represent?
Answer and explanation
Correct answer: B. Effective volume occupied by gas molecules
- Step 1: Real gas molecules have finite non-zero sizes, reducing the free volume available for motion. Step 2. The parameter 'b' represents the excluded volume (approx 4 times actual molecular volume) per mole. Answer: Effective volume occupied by one mole of gas molecules (co-volume). Why not the others: Attractive forces is corrected by 'a'; dipole moment is not in van der Waals equation; bond dissociation is chemical.
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