IMAT 2018 Q50 [Ideal Gases]

A sealed container contains 1.00 mol of hydrogen gas, which behaves as an ideal gas.

Which of the following changes increase(s) the total kinetic energy of the hydrogen gas molecules initially within the container?

  1. Changing the amount of hydrogen from 1.0 mol to 1.2 mol whilst keeping the pressure and volume constant.

  2. Changing the pressure from 1.0 atm to 1.2 atm whilst keeping the volume and number of moles constant.

  3. Changing the volume from 1.0 L to 1.2 L whilst keeping the pressure and number of moles constant.

A. 3 only
B. 2 and 3 only
C. 1, 2 and 3
D. 1 and 2 only
E. 1 only