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In a flask of volume V litres, 0.2 mol ...

In a flask of volume V litres, 0.2 mol of oxygen 0.4 mol of nitrogen, 0.1 mole of `NH_(3)` and 0.3 mol of He are enclosed at `27^(@)C`. If the total pressure exerted by these non reacting gases is one atmosphere, the partial pressure exerted by nitrogen is (A) 0.1 atmosphere (B) 0.2 atmosphere (C)0.3 atmosphere (D)0.4 atmosphere

A

1 atm

B

0.1 atm

C

0.2 atm

D

0.4 atm

Text Solution

Verified by Experts

The correct Answer is:
D
Mole fraction of `N_(2)`
`x_(N_(2)) = (0.4)/(0.2 + 0.4 + 0.1 + 0.3) = (0.4)/(100) = 0.4`
Partial pressure of `N_(2) = x_(N_(2)) xx` Total pressure
`= 0.4 xx 1 atm = 0.4 atm`
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