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For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what is the effect of decreasing the

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Question: For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what is the effect of decreasing the volume of the container?

Options:

  1. Shifts equilibrium to the right
  2. Shifts equilibrium to the left
  3. No effect on equilibrium
  4. Increases the concentration of NH3

Correct Answer: Shifts equilibrium to the right

Solution: 

Decreasing the volume increases the pressure, and according to Le Chatelier\'s Principle, the equilibrium will shift to the side with fewer moles of gas, which is to the right in this case.

For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what is the effect of decreasing the

Practice Questions

Q1
For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what is the effect of decreasing the volume of the container?
  1. Shifts equilibrium to the right
  2. Shifts equilibrium to the left
  3. No effect on equilibrium
  4. Increases the concentration of NH3

Questions & Step-by-Step Solutions

For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what is the effect of decreasing the volume of the container?
  • Step 1: Understand the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g). This means nitrogen gas and hydrogen gas react to form ammonia gas.
  • Step 2: Note that there are 4 moles of gas on the left side (1 N2 + 3 H2) and 2 moles of gas on the right side (2 NH3).
  • Step 3: Recognize that decreasing the volume of the container increases the pressure inside the container.
  • Step 4: Apply Le Chatelier's Principle, which states that if a system at equilibrium is disturbed, it will shift to counteract the disturbance.
  • Step 5: Since the pressure increases, the equilibrium will shift to the side with fewer moles of gas to reduce the pressure.
  • Step 6: Identify that the right side (2 NH3) has fewer moles of gas (2 moles) compared to the left side (4 moles).
  • Step 7: Conclude that the equilibrium will shift to the right, favoring the production of ammonia (NH3).
  • Le Chatelier's Principle – This principle states that if an external change is applied to a system at equilibrium, the system will adjust to counteract that change and restore a new equilibrium.
  • Gas Laws – Understanding how changes in volume affect pressure and the behavior of gases in a closed system.
  • Stoichiometry of Gases – Recognizing the relationship between the number of moles of reactants and products in a chemical reaction.
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