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Two vassels having equal volumes contain...

Two vassels having equal volumes contains `H_(2)` and He at 1 and 2 atm respectively same temperature Select the correct statements .

A

`u_(rms)H_(2)=u_(rms)`

B

`r_(H_(2))=(r_(He))/(sqrt2)`

C

`u_(rms)H_(2)=sqrt2u_(rmsHe)`

D

`r_(H_(2))=sqrt8r _(He)`

Text Solution

Verified by Experts

`u = (3RT)/(M)`
`:. (u_(H_(2)))/(u_(He)) = sqrt((M_(He))/(M_(H_(2))))=sqrt((4)/(2)) =sqrt2`
Also `:. (r_(H_(2)))/(r_(He)) = sqrt((M_(He))/(M_(H_(2))))xx(P_(H_(2)))/(P_(he))`
`=sqrt((4)/(2)) xx (1)/(2) = (1)/sqrt2` .
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