The equilibrium `N_(2) (g) + O_(2) (g)hArr 2NO (g)` 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`

The equilibrium `N_(2) (g) + O_(2) (g)hArr 2NO (g)` is established in

1.	The equilibrium `N_(2) (g) + O_(2) (g)hArr 2NO (g)` 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`
Answer» Correct Answer - B `{:(,N_(2) +, O_(2),hArr,2NO),("Initial",2"moles",4"moles",,),("At.Eq.",2-(1)/(2),4-(1)/(2),,2xx(1)/(2)=1"mol"):}` Molar concentration of NO at equilibrium `=(1)/(2.5) =0.4`

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