Question

A mixture of 1. 62 mol of N₂ , 1.20 mol of H₂ and 9.24 mole 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 . Predict the direction of reaction.

Answer 1

Calculate the concentration of each species in the reaction and then solve for Q_c .

As Q_c > K_c , the net reaction will be in the backward direction.