Which of the following is NOT a postulate of the kinetic molecular theory?
A; the average kinetic energy of the particles is directly proportional to the absolute temp.
B;the forces of attraction and repulsion between the particles are insignificant
C:the moving particles undergo perfectly elastic collisions with the walls of the container
E; all of the above are true
I am going with E: all of the above
Do you agree??
Thanks andy
WHY NOT
Thanks Dr BOB
!!!!!!
Andy
No, I do not agree with your choice. Option E states that all of the above statements are true, but one of them is not actually a postulate of the kinetic molecular theory.
To determine the correct answer, let's start by understanding what the kinetic molecular theory is. The kinetic molecular theory is a model that explains the behavior of gases based on the idea that gases consist of particles in constant motion.
Looking at the options:
A) The average kinetic energy of the particles is directly proportional to the absolute temperature: This is indeed a postulate of the kinetic molecular theory. It states that as the temperature increases, the average kinetic energy of the gas particles also increases.
B) The forces of attraction and repulsion between the particles are insignificant: This is also a postulate of the kinetic molecular theory. It assumes that gas particles do not have significant attractive or repulsive forces acting between them, except during occasional collisions.
C) The moving particles undergo perfectly elastic collisions with the walls of the container: This is not a postulate of the kinetic molecular theory. It is a statement related to the concept of elastic collisions, which means that no kinetic energy is lost during the collision. While it is true that gas particles exhibit elastic collisions, it is not specifically a fundamental postulate of the theory.
Hence, option E (all of the above) is incorrect. The correct answer is option C: the moving particles undergo perfectly elastic collisions with the walls of the container.