Average Speed of Gas Molecules – Rankers Physics
Topic: Thermal Physics
Subtopic: Kinetic Theory of Gases

Average Speed of Gas Molecules

If \(M\) is the molar mass of a gas, then the average speed of its molecules at temperature \(T\) is
\(\sqrt{\frac{3RT}{\pi M}}\)
\(\sqrt{\frac{8RT}{\pi M}}\)
\(\sqrt{\frac{2RT}{M}}\)
\(\sqrt{\frac{3RT}{M}}\)

Solution:

According to Maxwell-Boltzmann distribution, the average speed of molecules of an ideal gas is given by the expression \(v_{\text{avg}} = \sqrt{\frac{8RT}{\pi M}}\).

Leave a Reply

Your email address will not be published. Required fields are marked *