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In a closed system at equilibrium, if the pressure is increased, what will happe

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Question: In a closed system at equilibrium, if the pressure is increased, what will happen to the equilibrium position if there are more moles of gas on the reactant side?

Options:

  1. Shift to the right
  2. Shift to the left
  3. No change
  4. Increase in temperature

Correct Answer: Shift to the left

Solution: 

Increasing the pressure will shift the equilibrium to the side with fewer moles of gas, which in this case is the right side.

In a closed system at equilibrium, if the pressure is increased, what will happe

Practice Questions

Q1
In a closed system at equilibrium, if the pressure is increased, what will happen to the equilibrium position if there are more moles of gas on the reactant side?
  1. Shift to the right
  2. Shift to the left
  3. No change
  4. Increase in temperature

Questions & Step-by-Step Solutions

In a closed system at equilibrium, if the pressure is increased, what will happen to the equilibrium position if there are more moles of gas on the reactant side?
  • Step 1: Understand that a closed system at equilibrium means that the reaction is balanced and the concentrations of reactants and products remain constant.
  • Step 2: Recognize that pressure affects the position of equilibrium in reactions involving gases.
  • Step 3: Identify that increasing the pressure in a closed system will cause the equilibrium to shift towards the side with fewer moles of gas.
  • Step 4: Determine which side has more moles of gas. In this case, the reactant side has more moles of gas.
  • Step 5: Conclude that since the reactant side has more moles of gas, increasing the pressure will shift the equilibrium to the right side, which has fewer moles of gas.
  • Le Chatelier's Principle – This principle states that if a system at equilibrium is subjected to a change in pressure, temperature, or concentration, the system will adjust to counteract that change and restore a new equilibrium.
  • Mole Count in Gaseous Reactions – In reactions involving gases, the number of moles on each side of the equation is crucial for predicting the direction of the shift in equilibrium when pressure changes.
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