Which change would increase the equilibrium yield of ammonia in N₂(g) + 3H₂(g) ⇌ 2NH₃(g)?
Answer and explanation
Correct answer: D. Increasing the pressure
- Step 1: There are 4 mol of gas on the left and 2 on the right.
- Step 2: Raising the pressure shifts the equilibrium to the side with fewer moles of gas, producing more ammonia.
Answer
Increasing the pressure.
Why not the others: Adding a catalyst: a catalyst does not change the position of equilibrium. Removing nitrogen: this shifts the equilibrium back to the left. Decreasing the pressure: this favours the side with more gas molecules.
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