Equal weights of methane and oxygen are ...

Equal weights 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)`

Verified by Experts

The correct Answer is:

A

Pressure exerted by oxygen will be proportinoal to mole fraction of `O_(2)`.
Mole fraction of `O_(2)=((W)/(32))/((W)/(16)+(W)/(32))=(1)/(3)`

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