NO2 gas diffuses faster than Br2 gas. Why is it so?
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The diffusion of a gas is inversely proportional to the square-root of the Molecular Weight of the gas.
Molecular weight of Bromine =160
Molecular weight of NO2= 46
Molecular weight of CO2=44
Molecular weight of Methane=16.
So the gas with lowest Molecular Mass diffuses most rapidly.
The gas with lowest Molecular Mass Methane will diffuse most rapidly.
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