The number of collisions of argon atoms with the walls of their fixed container

Question

The number of collisions of argon atoms with the walls of their fixed container per unit time: a) Increases when the temperature decreases b) Remains the same when carbon dioxide is added to the container at constant temperature c) Increases when carbon dioxide is added to the container at constant temperature d) Decreases when the average kinetic energy per molecule increases e) Remains the same when the volume of the container is decreased at constant temperature f) Changes in proportion to the partial pressure of a second added gas according to Dalton's Law g) Depends on dipole interactions according to KMT h) Does not depend on the speed of the particles i) Are not considered in the context of KMT j) None of the above

Explanation / Answer

According to Kinetic Molecular Theory, KMT, there no interactions among the gas molecules and hence there is no effect of added gas on the nature present gas and thus the number of collisions.
Kineteic energy is dependant of temperature and thus increase in temeprature increases the kinetic energy and hence the number of collisions.

SO, the correct answer is

(b) Remains the same wen CO2 is added to the container at constant temperature.

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