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A gas diffuse (1)/(5) times as fast as h...

A gas diffuse `(1)/(5)` times as fast as hydrogen at same pressure. Its molecular weight is

A

50

B

25

C

`25 sqrt2`

D

`50 sqrt2`

Text Solution

Verified by Experts

The correct Answer is:
A
`r_g = (1)/(5) * r_(H_(2))`
`(M_(g))/(M_(H_(2)) = [(r_(H_(2)))/(r_(g))]^(2) = (5)^(2) = 25 , M_(g) = 2 xx 25 = 50`
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