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A vessel contains 0.1 mol e of He, 0.1 ...

A vessel contains `0.1 mol e of He, 0.1` mole of `O_(2)` and `0.3` mole of `N_(2)`. The total pressure is `1` atomosphere. The pressure exerted by `O_(2)` is

A

`380 "mm of Hg"`

B

`456 "mm of Hg"`

C

`304 "mm of Hg"`

D

`152 "mm of Hg"`

Text Solution

Verified by Experts

The correct Answer is:
D
Total moles `=0. 1(He)+0.1(O_(2))+0.3(N_(2))= 0.5 "moles"`
Pressure exerted by `O_(2)=` mole fraction of `O_(2)xx "total pressure"`
`(0.1)/(0.5)xx1=(1)/(5)xx760= 152 mm Hg`
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