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Equal masses of methane and hydrogen are...

Equal masses of methane and hydrogen are mixed in an empty container at `25^(@)C`. The fraction of the total pressure exerted by hydrogen is

A

`1//2`

B

`8//9`

C

`1//9`

D

`16//17`

Text Solution

Verified by Experts

The correct Answer is:
B
Let mass of `CH_4 and H_2 = 16g `
Mol. Weight of `CH_4 = 16` , Mol. weight of `H_2 =2`
`n_(CH_4) = (W)/(M) = (16)/(16) = 1, n_(H_2) = (16)/(2) = 8`
`:. P_(H_2) = x_(H_2) xx P_("total") = (8)/(9) xx P_("Total")`
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