Graham’s Law of Effusion
The rate of effusion of a gas is inversely related to the square root of its molar mass.
EFFUSION: the process by which a gas escapes from its container
through a tiny hole into an evacuated space
(related to the rms speed)
rateA/rateB = MB1/2/MA1/2
The same relationships pertain to gaseous diffusion rates!
Previous slide | Next slide | Back to first slide | View graphic version |