The ratio of rate of diffusion of hydrogen and helium gas is:

1 : 1.4

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1 : 1

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1.4 : 1

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1 : 2

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Solution

The correct option is C $1.4 : 1$
Hydrogen gas exists as a diatomic molecule $H_{2}$ . However, helium gas exists as nonatomic $H e$ .

$\frac{r_{H_{2}}}{r_{H e}} = \sqrt{\frac{M_{H e}}{M_{H}}}$

$= \sqrt{\frac{4}{2}} = \sqrt{2} = 1.4$

$∴ r_{H_{2}} : r_{H e} = 1.4 : 1$ .

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The ratio of rate of diffusion of hydrogen and helium gas is:

The correct option is C 1.4:1Hydrogen gas exists as a diatomic molecule H2. However, helium gas exists as nonatomic He.rH2rHe=√MHeMH=√42=√2=1.4∴rH2:rHe=1.4:1.

The correct option is C $1.4 : 1$
Hydrogen gas exists as a diatomic molecule $H_{2}$ . However, helium gas exists as nonatomic $H e$ .

$\frac{r_{H_{2}}}{r_{H e}} = \sqrt{\frac{M_{H e}}{M_{H}}}$

$= \sqrt{\frac{4}{2}} = \sqrt{2} = 1.4$

$∴ r_{H_{2}} : r_{H e} = 1.4 : 1$ .