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  3. Chemistry
  4. At a certain temperature, equilibrium constant (Kc) is 16 for the reaction. SO 2(g)+ NO 2(g) leftharpoons SO 3(g)+ NO (g) If we take one mole each of all the four gases in a one litre container, what would be the equilibrium concentrations of NO and NO 2 ?

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Q. At a certain temperature, equilibrium constant $\left(K_{c}\right)$ is $16$ for the reaction.
$SO _{2}(g)+ NO _{2}(g) \rightleftharpoons SO _{3}(g)+ NO (g)$
If we take one mole each of all the four gases in a one litre container, what would be the equilibrium concentrations of $NO$ and $NO _{2}$ ?

IIT JEEIIT JEE 1987Equilibrium

Solution:

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$QC =1< K_{c}$
i.e. reaction proceed in forward direction to attain equilibrium.
$16=\left(\frac{x}{1-x}\right)^{2} $
$\Rightarrow x=0.80 $
$[N O]=0.80 M,$
$\left[N O_{2}\right]=0.20 M$