In a reaction at equilibrium, what happens if the volume is increased?

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Question: In a reaction at equilibrium, what happens if the volume is increased?

Options:

Correct Answer: Shifts to the side with more moles of gas

Solution:

Increasing the volume decreases the pressure, which shifts the equilibrium towards the side with more moles of gas.

In a reaction at equilibrium, what happens if the volume is increased?

In a reaction at equilibrium, what happens if the volume is increased?

Step 1: Understand that a reaction at equilibrium means the forward and reverse reactions are happening at the same rate.
Step 2: Know that gases occupy space and their pressure is related to the volume they are in.
Step 3: When the volume of the container is increased, the space for the gas molecules becomes larger.
Step 4: Increasing the volume causes the pressure of the gas to decrease because the same number of gas molecules is now spread out over a larger space.
Step 5: According to Le Chatelier's principle, if the pressure decreases, the equilibrium will shift to counteract this change.
Step 6: The equilibrium will shift towards the side of the reaction that has more moles of gas, as this will increase the pressure back up.

Le Chatelier's Principle – This principle states that if a system at equilibrium is subjected to a change in conditions (such as volume or pressure), the equilibrium will shift to counteract that change.
Gas Moles and Volume Relationship – In reactions involving gases, the number of moles on each side of the equilibrium can affect how the system responds to changes in volume.