|Gases : Graham's Laws of Diffusion and Effusion|
Graham's Law of Diffusion
- The rate at which gases diffuse is inversely proportional to the square root of their densities.
Graham's Law of Effusion
- The rate of effusion of a gas is inversely proportional to the square root of either the density or the molar mass of the gas.
|The time required for 25-mL samples
of different gasses to diffuse through a
pinhole into a vacuum.
The Kinetic Molecular Theory and Graham's Law
- Since KEavg is dependent only upon T, two different gases at the same temperature must have the same KEavg.
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