Essential Chemistry for IGCSE - Particles And Purification (Section 6 - No. 11)
If you have two gases at the same temperature, what happens to their rate of diffusion?
The gas with the heavier molecules diffuses faster.
The gas with the lighter molecules diffuses faster.
The diffusion rate is the same for both.
It depends on the pressure.
Explanation
Lighter molecules diffuse faster.
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