Exercise-3

The average velocity of gas molecules is $400 \mathrm{m} {\sec }^{-1}$. Calculate its r.m.s. velocity at the same temperature.

According to kinetic theory of gases

As the temperature is raised from $20°\mathrm{C}$ to $40°\mathrm{C}$, the average kinetic energy of neon atoms changes by a factor :

Which one of the following statements is not true about the effect of an increase in the temperature on the distribution of the molecular speeds in a gas?                             

A gas described by Van der waals equation

$\text{'}\mathrm{a}\text{'}$ and $\text{'}\mathrm{b}\text{'}$ are van der Waals' constants for gases. Chlorine is more easily liquefied than ethane because

The compressibility factor for a real gas  at high pressure is:

If $\mathrm{Z}$ is a compressibility factor, van der Waals equation at low pressure can be written as