Question

Consider the following reaction at equilibrium: `2NH_3(g) rightleftharpoons N_2(g) + 3H_2(g)` `DeltaH = +92.4 kJ`. What does Le Chatelier's Principle predicts will happen when adding `N_2(g)` to the system at equilibrium?

Answer 1

Well, the equilibrium will shift to the left as written.

Explanation:

See this old answer for a few more details. Le Chatelier's principle describes how equilibria evolve under stress. I think the direction equilibrium change is fairly unambiguous should `[N_2]` increase or decrease. See here for another spray.