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  4. At 600 K , 2 mol of NO are mixed with 1 mol of O 2. 2 NO ( g )+ O 2( g ) leftarrows 2 NO 2( g ) The reaction occurring as above comes to equilibrium under a total pressure of 1 atom. Analysis of the system shows that 0.6 mol of oxygen are present at equilibrium. The equilibrium constant for the reaction is (Nearest integer).

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Q. At $600\, K , 2 \,mol$ of $NO$ are mixed with $1 mol$ of $O _2$.
$2 NO _{( g )}+ O _2( g ) \rightleftarrows 2 NO _2( g )$
The reaction occurring as above comes to equilibrium under a total pressure of 1 atom. Analysis of the system shows that $0.6 mol$ of oxygen are present at equilibrium. The equilibrium constant for the reaction is ___(Nearest integer).

JEE MainJEE Main 2022Equilibrium

Solution:

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$K _{ p }=\frac{\left(\frac{0.8}{2.6}\right)^2}{\left(\frac{1.2}{2.6}\right)^2\left(\frac{0.6}{2.6}\right)}=1.925$