Statement I: Above critical temperature, a substance cannot exist in liquid state. Statement II: Above critical temperature, the average kinetic energy of gas molecules is always greater than the maxi

Question

Statement I: Above critical temperature, a substance cannot exist in liquid state. Statement II: Above critical temperature, the average kinetic energy of gas molecules is always greater than the maximum kinetic energy of a molecule possible in liquid state.

Prashant Kotian · Accepted Answer

Correct answer: C. Above the critical temperature, thermal kinetic energy is too high for intermolecular attractions to condense the gas into a liquid, regardless of pressure (Statement I is correct). Statement II is physically meaningless, as molecular kinetic energies in both phases follow continuous distributions at any temperature. Thus, Statement II is incorrect.

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