Question

Kinetic Theory is based on an ideal gas model. The following statements about the ideal gas are
true EXCEPT:
(A) The average molecular kinetic energy is directly proportional to the absolute temperature
(B) All molecules move with the same speed
(C) All molecules make elastic collisions with each other and the walls of the container
(D) The attractive force between the molecules can be ignored
(E) All molecules obey laws of classical mechanics​

Answer 1

Answer:

B) All molecules move with the same speed

Answer 2

Kinetic Theory is based on an ideal gas model. The following statements about the ideal gas are  true EXCEPT: (B) All molecules move with the same speed.

Explanation:

• The speed of individual gas molecules is different.
• The collisions between the molecules of the gas result in the change of speed of the gas molecules.
• However, the average speed of the system remains unaffected.
• The heavier gas molecules have less speed while lighter gas molecules have more speed.
• Thus, all molecules do not move with the same speed.