Question

Use Kinetic Molecular Theory to describe the effect of adding a gas to a container that cannot expand.

A) An increase in the number of gas particles in the container decreases the average energy of each particle and decreases the temperature of the gas.

B) An increase in the number of gas particles in the container causes the container to break.

C) An increase in the number of gas particles in the container only increases the number of moles but
does not change the behavior of the gas.

D) An increase in the number of gas particles in the container increases the number of collisions with the walls and increases the pressure of the gas.

Answer 1

Related Concepts

• The Kinetic Molecular Theory (KMT)
• Gas laws

Solving the Question

A) Incorrect. It is not guaranteed that adding gas particles to the container will decrease the kinetic energy, as we don't know what energy those particles have to begin with.

B) Incorrect. We are not given any information that reveals that the container will break.

C) Incorrect. Because there are more particles, more collisions will occur in the container, increasing the likelihood that bonds may form between particles. This deviates from ideal gas behaviour.

D) Correct. Adding particles will increase the number of collisions that occurs as well as the overall pressure.

Answer

Option D