Q. Briefly explain about Diffusion of Gases?

Ans.

 The following are some important points on the diffusion of gases:

• Gas molecules have an average kinetic energy (E_k) at a particular temperature as defined by this equation
  
  E_k = 1/2 mv²

(m is the mass of the gas molecule, and v is the average speed.)

• Temperature is proportional to the kinetic energy. In fact temperature is actually a measure of kinetic energy.
• Comparing the above equation for two different gases at the same temperature shows that the following relationship between the masses and velocities of the molecules:
  
  m₂/m₁ = v₁²/v₂²
• This relationship is important to chemists when they want to separate different isotopes of gases.