Chemistry - Ideal Gas Question with Solution | TestHub
Consider the following statements:
I. At constant pressure the mean free path of an ideal gas increases when the temperature is raised.
II. The collision frequency (per unit volume) of a gas of N molecules per unit volume is (1/2) N × (collisions made by one molecule per second).
III. The average speed of the molecules of one gas in a mixture does not depend on the other gases present.
IV. At constant pressure, the number of collisions made by one molecule per second increases when the temperature is raised.
Which statements are correct?
Options:
Answer:
Solution:
I. is proportional to T at constant P: true.
II Every collision involves two molecules: true.
III Average speed depends on T and the molar mass of that gas only: true.
IV At constant P, N is proportional to 1/T and the collisions per molecule are proportional to , which is proportional to and falls: false.
Correct: I, II and III only. Answer: (C).
