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?

Question

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?

Philoid · Accepted Answer

• According to Le Chatelier’s principle: “When the concentration of any of the participants in a reaction (reactant or products) in a reaction at Equilibrium is changed keeping the temperature constant the composition of the Equilibrium mixture changes so as to adjust (minimize) the effect of concentration changes”

For the reaction, N₂ (g) + 3H₂ (g) ⇋ 2NH₃ (g) the increase in total pressure at constant temperature, the Equilibrium concentration will be changed but this is not applicable for the Equilibrium constant K_c as it will not change with pressure or concentration as it depends on temperature and temperature is remaining constant.