Diatomic nitrogen is added to the equilibrium system:
N₂ (g) + H₂ (g)
2 NH₃(g) + heat
When a new equilibrium is established the concentration of H₂ will be ________ the amount at the original equilibrium,and the amount of NH₃ will be ________ the amount at the original equilibrium.

Question

Diatomic nitrogen is added to the equilibrium system:
N₂ (g) + H₂ (g)

Diatomic nitrogen is added to the equilibrium system: N<sub>2</sub> (g) + H<sub>2</sub> (g) 2 NH<sub>3</sub>(g) + heat When a new equilibrium is established the concentration of H<sub>2</sub> will be ________ the amount at the original equilibrium,and the amount of NH<sub>3</sub> will be ________ the amount at the original equilibrium. A) greater than; greater than B) greater than; less than C) less than; greater than D) less than; less than E) Both changes will be impossible to determine.

2 NH₃(g) + heat
When a new equilibrium is established the concentration of H₂ will be ________ the amount at the original equilibrium,and the amount of NH₃ will be ________ the amount at the original equilibrium.

Quizplus · Accepted Answer

The addition of diatomic nitrogen will shift the equilibrium towards the side with fewer moles of gas in order to decrease the pressure. In this case, that means it will shift towards the right, forming more product, namely NH₃. Therefore, the concentration of NH₃ will be greater than the original equilibrium. At the same time, the concentration of H₂ will decrease because it is a reactant, and more of it will be consumed to form more product. Therefore, the concentration of H₂ will be less than the original equilibrium. Thus, the correct answer is (C) less than; greater than.

Diatomic Nitrogen Is Added to the Equilibrium System