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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

`1/3xx(273)/(298)`

Text Solution

Verified by Experts

The correct Answer is:
A
Mole fraction of `O_(2)=("Moles of" O_(2))/("Total moles")`
Partial pressure of `O_(2)` = Mole fraction of `O_(2)`
Mole fraction of `O_(2)=(W/32)/(W/16+W/32)=1/3`
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