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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

`1/3 xx 273/298`

Text Solution

Verified by Experts

The correct Answer is:
A
Mole fraction of oxygen `(x_(O_(2)))`
`= ((W)/(32))/((W)/(32) + (W)/(16)) = ((1)/(32))/((1)/(32)+(1)/(16))=1/3`
`pO_(2) prop` mole fraction
`:. pO_(2) = 1/3` of the total pressure.
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DINESH PUBLICATION-STATES OF MATTER : GASES AND LIQUIDS-Straight Objective Type (MCQ)
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