Given the reaction: 3H₂(g) + N₂(g) ⇌ 2NH₃(g) + heat energy. Which of the following would drive the equilibrium in the direction opposite to that of the other four choices?

1. Remove ammonia from the reaction
2. Increase the temperature of the system
3. Increase the pressure on the system
4. Add nitrogen gas

dear student
the correct answer is2
According to Le Chateliar’s principle, removing ammonia from the reaction would drive the reaction in the forward direction.
Since the reaction is exothermic, according to Le chateliar principle, by increasing the temperature of the system, the reaction will go in the backward direction.