7.12 A mixture of 1.57 mol of N2, 1.92 mol of H2 and 8.13 mol of NH3 is introduced into a 20 L reaction vessel at 500 K. At this temperature, the equilibrium constant, Kc for the reaction N2 (g) + 3H2 (g) 2NH3 (g) is 1.7 × 102. Is the reaction mixture at equilibrium? If not, what is the direction of the net reaction?
The given reaction is:
The given concentration of various species is
Now, the reaction quotient is:
Since, , the reaction mixture is not at equilibrium.
Again, , Hence, the reaction will proceed in the reverse direction.