A gas sample is confined in a 1 L container. Which of the following will occur if the temperature is increased?

Question

I: The kinetic energy will increase

II: The pressure will decrease

III: The density of the gas will decrease.

IV: The molecular motion will increase.

 

I only 

 

II only 

 

II and III

 

III and IV

 

I and IV

Answer 1

In a closed container (constant volume), increasing the temperature will

-increase the kinetic energy of the gas

-increase the pressure

-increase the molecular motion

 

Since density is mass/volume, it will not change since both mass and volume are constant.