JEE Chemistry
JEEChemistryStates of Matter: GasesClass 11

What is the difference between diffusion and effusion?

Diffusion is gases spreading and mixing through one another; effusion is a gas escaping through a tiny hole — both are faster for lighter molecules (Graham's law).

Diffusion is gases spreading and mixing through one another; effusion is a gas escaping through a tiny hole — both are faster for lighter molecules (Graham's law). A reliable way to keep them apart is to focus on what each one is defined by, not just the similar-sounding words.

Key point

diffusion vs effusion

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