Question

Pressure of a gas at constant volume is proportional to

• A. Total internal energy of the gas
• B. Average kinetic energy of the molecules
• C. Average potential energy of the molecules
• D. Total energy of the gas

Answer 1

Answer: (A)

Total internal energy of the gas

Answer 2

Pressure, $P = \frac{1}{3}\frac{M}{V}{v^{2}}_{rms} = \frac{2}{3}E$

Here, $E = \frac{1}{2}M{v^{2}}_{rms}$ is total internal energy of the gas.