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Q.

Calculate the ratio of rate of effusion of O₂ and H₂ from a container containing 16gm O₂ and 2gm H₂

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a

1 : 4

b

8 : 1

c

1 : 8

d

4 : 1

answer is A.

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Detailed Solution

$Rate of effusion : \frac{r_{O_{2}}}{r_{H_{2}}} = \frac{n_{O_{2}}}{n_{H_{2}}} \sqrt{\frac{M_{H_{2}}}{M_{O_{2}}}}$

16 gm of O₂=0.5 mole and 2 gm of H₂=1 mole

$\frac{r_{O_{2}}}{r_{H_{2}}} = \frac{0.5}{1} \sqrt{\frac{2}{32}}$ = $\frac{1}{8}$

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