Question

If the four tubes of a car are filled to the same pressure with $N_2$, $O_2$, $H_2$ and $Ne$ separately, then which one will be filled first?

• A. $N_2$
• B. $O_2$
• C. $Ne$
• D. $H_2$

Answer 1

The correct option is D $H_2$

Given gases are $N_2,O_2,H_2$ and $Ne$.

Molecular weight $N_2=28gm$

$O_2=16gm$

$H_2=2gm$

$Ne=20.2gm$

Differsion Rate $=\sqrt{\frac{1}{M.W}}$

$\therefore$ Diffusion Rate of $H_2$ is mole. So, $H_2$ will be filled first.