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The equilibrium N(2)+O(2)hArr 2NO is est...

The equilibrium `N_(2)+O_(2)hArr 2NO` is established in a reaction vessel of 2.5 L capacity. The amounts of `N_(2)` and `O_(2)` taken at the start were respectively 2 moles and 4 moles. Half a mole of nitrogen has been used up at equilibrium. The molar concentration of nitric oxide is :

A

`0.2`

B

`0.4`

C

`0.6`

D

`0.1`

Text Solution

Verified by Experts

The correct Answer is:
B
Amount of `N_(2)` used up = 0.5 mole
Amount of NO formed `= 0.5xx2=1.0`
Molar concentration `=(1.0)/(2.5)=0.4`
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