Step 2: Identify the number of gas moles on each side of the equation. The left side has 2 moles (2A) and the right side has 2 moles (1B + 1C).
Step 3: Recognize that doubling the volume of the container decreases the pressure of the gases inside.
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 decreases, the equilibrium will shift towards the side with more moles of gas to increase the pressure.
Step 6: In this case, both sides have the same number of moles (2 moles), so the equilibrium position will not shift significantly.
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.
Effect of Volume on Equilibrium – Changing the volume of a gas system affects the pressure; increasing the volume decreases the pressure, which can shift the equilibrium position depending on the number of moles of gas on each side.