For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens if the volume of the con

Practice Questions

Q1
For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens if the volume of the container is decreased?
  1. Equilibrium shifts to the left
  2. Equilibrium shifts to the right
  3. No change in equilibrium
  4. Equilibrium constant changes

Questions & Step-by-Step Solutions

For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens if the volume of the container is decreased?
  • Step 1: Understand the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g). This means nitrogen and hydrogen gases react to form ammonia gas.
  • Step 2: Recognize that gases take up space in a container. If we decrease the volume of the container, the gases inside are compressed.
  • Step 3: Know that decreasing the volume increases the pressure of the gases 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: Identify the number of moles of gas on each side of the reaction: the left side has 1 (N2) + 3 (H2) = 4 moles of gas, and the right side has 2 moles of gas (NH3).
  • Step 6: Since the right side has fewer moles of gas (2 moles) compared to the left side (4 moles), the equilibrium will shift to the right side to reduce the pressure.
  • 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 chemical reaction.
  • Stoichiometry of Gases – Recognizing the relationship between the number of moles of reactants and products in a gas-phase reaction.
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