Question
Equilibrium constant Kc for the reaction
At a particular time, the analysis shows that composition of the reaction mixture is 3·0 mol L–1 N2, 2·0 mol L–1 H2 and 0·5 mol L–1 NH3. Is the reaction at equilibrium? If not in which direction does the reaction tend to proceed to reach equilibrium?
Solution
Reaction quotient, Qc for the reaction will be written as
Given Kc 0.061< QC 0.0104
Since Qc ≠ Kc, reaction is not in equilibrium.
Since Qc < Kc reaction will proceed in the forward direction i.e. towards the formation of ammonia.
