Molecular Speed
At any particular time, in the given sample of gas all the molecules do not possess same speed, due to the frequent molecular collisions with the walls of the container and also with one another, the molecules move with ever changing speeds and also with ever changing direction of motion. The average speed associated with a group of molecule is known as molecular speed .It is valid in ideal gas, where the molecules do not interact with each other.
\[Average \; molecular \; speed = \sqrt{3*(ideal\; gas \; constant)*(Temperature)/m} \]
The equation is:
\[v=\sqrt{3RT/m} \]
Where:
v: molecular speed
R: Ideal gas constant. (8.314 kg*m2/s2*mol*K)
T: Absolute Temperature in Kelvin.
m: molar mass