Question
A mixutre of 1.57 mol of N2, 1.92 mol of H2 and 8.13 mol of NH3 is introduced into a 20L reaction vessel at 500K. At this temperature, the equilibrium constant, Kc, for the reaction
is 
. Is the reaction mixture at equilibrium? If not, what is the direction of the net reaction?
Solution
The reversible reaction is
Concentration ratio,
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the reaction mixture is not in equilibrium.
As Qc > Kc, the net reaction will be in the backward direction.
