5. A study of the system, 4 NH3(g) + 7 O2(g) 2 N2O4(g) + 6 H2O(g), was carried out. A system was prepared with [NH3] = [O2] = 3.60 M as the only components initially. At equilibrium, [N2O4] is 0.60 M. Calculate the value of the equilibrium constant, Kc, for the reaction.

The value of the equilibrium constant, Kc, for the reaction is 0.013

Explanation:

Initial concentration of = 3.60 M

Initial concentration of = 3.60 M

The given balanced equilibrium reaction is,

Initial conc.       3.60 M        3.60 M              0 M        0 M

At eqm. conc.     (3.60-4x) M   (3.60-7x) M   (2x) M      (6x) M

The expression for equilibrium constant for this reaction will be,

2x = 0.60 M

x= 0.30 M

Now put all the given values in this expression, we get :

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explanation: