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Equal mass of methane and oxygen are mix...

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

A

`1//3`

B

`1//2`

C

`2//3`

D

`1//3 xx 273//298`

Text Solution

Verified by Experts

The correct Answer is:
A
Let mass of each gas `CH_(4)` and `O_(2) = 32 g`
(Mol. Mass of `rCH_(4) = 16`, Mol. Mass of `O_(2) = 32`)
`x_(CH_(4)) = (32)/(16) = 2, x_(O_(2)) = (32)/(32) = 1`
`:. X_(O_(2)) = x_(O_(2)) xx P_("Total") = (1//3) xx P_("Total")`
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