Among HCL and NH₃ how to know which gas travelled fast

1.	Among HCL and NH₃ how to know which gas travelled fast
Answer» Rate at which GASES travel are inversely proportional to their molecular mass, More the molecular mass, less will be its rate of diffusion. $Rate\ \alpha\ \frac{1}{molar\ mass}$ molar mass of HCL = 36.5g mole mass of NH₃ = 17g Since NH₃ has lower molecular mass, it will travel FASTER. The distance travelled by it will ALSO be higher than that of HCl.

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