Statement 1: Under identical conditions of temperature and pressure, equal number of molecules of different gases occupies the same volume.
Statement 2: The distance between gas molecules is much larger than the actual dimensions of molecules.

Question

Statement 1: Under identical conditions of temperature and pressure, equal number of molecules of different gases occupies the same volume.

Statement 2: The distance between gas molecules is much larger than the actual dimensions of molecules.

TestHub · Accepted Answer

Statement 1 is Avogadro's law, which is correct. Statement 2 is a correct kinetic-theory fact. Because intermolecular distances are enormous compared with molecular size, the molecules' own volume and identity are irrelevant, so the volume at fixed T and P is fixed only by the number of molecules. Hence II is exactly why I holds. Ans: (a).

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