Given the van der Waals constant '' for , , , and (). Which of these gases can be most easily liquefied?

Question

Given the van der Waals constant '$a$' for $NH_3 = 4.17$, $CO_2 = 3.59$, $SO_2 = 6.71$, and $Cl_2 = 6.49$ ($	ext{L}^2	ext{ atm mol}^{-2}$). Which of these gases can be most easily liquefied?

Prashant Kotian · Accepted Answer

Correct answer: C. The constant '' is a direct measure of the magnitude of intermolecular attractive forces. A higher '' indicates stronger attractions, making the gas easier to liquefy. has the highest value ().

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