There are equal number of molecules of H _2 and O _2 in a vessel.…

Question

There are equal number of molecules of $H _2$ and $O _2$ in a vessel. If there is a tiny hole in the vessel, which gas will leak faster?

✓

Answer

Volume of gas leaking from the hole per second = Area of the hole $\times$ Average speed of gas
$\left[\because\right.$ Speed of gas molecules $\left.=\frac{1}{\sqrt{\text { Molecular weight } M _{ A }}}\right]$
The molecular weight of hydrogen is less than that of oxygen. Therfore, hydrogen gas will leak rapidly through the hole in the vessel.

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