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In a reaction at equilibrium, what effect does increasing the pressure have if t

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Question: In a reaction at equilibrium, what effect does increasing the pressure have if the number of moles of gas on the reactant side is greater than on the product side?

Options:

  1. Shifts to the right
  2. Shifts to the left
  3. No effect
  4. Reaction stops

Correct Answer: Shifts to the right

Solution: 

Increasing the pressure will shift the equilibrium to the right, favoring the side with fewer moles of gas.

In a reaction at equilibrium, what effect does increasing the pressure have if t

Practice Questions

Q1
In a reaction at equilibrium, what effect does increasing the pressure have if the number of moles of gas on the reactant side is greater than on the product side?
  1. Shifts to the right
  2. Shifts to the left
  3. No effect
  4. Reaction stops

Questions & Step-by-Step Solutions

In a reaction at equilibrium, what effect does increasing the pressure have if the number of moles of gas on the reactant side is greater than on the product side?
  • Step 1: Understand what equilibrium means. It is a state where the forward and reverse reactions occur at the same rate.
  • Step 2: Identify the sides of the reaction. The reactant side has more moles of gas than the product side.
  • Step 3: Know that increasing pressure affects gases. It pushes the reaction towards the side with fewer gas moles.
  • Step 4: Since the reactant side has more moles, increasing pressure will shift the equilibrium to the right, towards the product side.
  • Step 5: Conclude that increasing pressure favors the side with fewer moles of gas, which is the product side in this case.
  • 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.
  • Equilibrium Shift – Understanding how changes in conditions (like pressure) affect the position of equilibrium in a chemical reaction.
  • Mole Ratio – Recognizing the importance of the number of moles of gas on each side of the reaction to predict the direction of the shift.
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