Statement 1: Absolute zero is a theoretically possible temperature at which the volume of the gas becomes zero.
Statement 2: The total kinetic energy of the molecule is zero at absolute zero.

Question

Statement 1: Absolute zero is a theoretically possible temperature at which the volume of the gas becomes zero. Statement 2: The total kinetic energy of the molecule is zero at absolute zero.

TestHub · Accepted Answer

Statement 1 is incorrect: absolute zero is not attainable (third-law unattainability), and real gases liquefy and solidify long before 0 K, so a gas volume never actually becomes zero — the zero-volume point is only a formal extrapolation of the ideal-gas V–T line. Statement 2 is correct in kinetic theory: average molecular KE = 3/2kT vanishes as T → 0. I incorrect, II correct. Ans: (d).

Chemistry - Ideal Gas Question with Solution | TestHub

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