On increasing the pressure, in which direction will the gas-phase reaction
proceed to re-establish equilibrium, is predicted by applying Le Chatelier’s
principle. Consider the reaction.
N2 (g) + 3H2 (g) ⇌ 2NH3 (g)
Which of the following is correct, if the total pressure at which the equilibrium
is established, is increased without changing the temperature?
(i) K will remain the same
(ii) K will decrease
(iii) K will increase
(iv) K will increase initially and decrease when pressure is very high
Option (i) K will remain the same is the answer.