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What is the effect of a catalyst on a system at equilibrium?

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Question: What is the effect of a catalyst on a system at equilibrium?

Options:

  1. Shifts the equilibrium position
  2. Increases the rate of reaction
  3. Decreases the equilibrium constant
  4. Has no effect on the reaction

Correct Answer: Increases the rate of reaction

Solution: 

A catalyst increases the rate of both the forward and reverse reactions equally, thus it does not shift the equilibrium position but helps reach it faster.

What is the effect of a catalyst on a system at equilibrium?

Practice Questions

Q1
What is the effect of a catalyst on a system at equilibrium?
  1. Shifts the equilibrium position
  2. Increases the rate of reaction
  3. Decreases the equilibrium constant
  4. Has no effect on the reaction

Questions & Step-by-Step Solutions

What is the effect of a catalyst on a system at equilibrium?
  • Step 1: Understand what a catalyst is. A catalyst is a substance that speeds up a chemical reaction without being consumed in the process.
  • Step 2: Know that in a chemical reaction, there are two types of reactions: the forward reaction (reactants turning into products) and the reverse reaction (products turning back into reactants).
  • Step 3: Realize that a system at equilibrium means the rate of the forward reaction equals the rate of the reverse reaction, so the concentrations of reactants and products remain constant.
  • Step 4: Learn that when a catalyst is added to a system at equilibrium, it speeds up both the forward and reverse reactions equally.
  • Step 5: Conclude that because the catalyst affects both reactions the same way, it does not change the position of the equilibrium (the ratio of reactants to products).
  • Step 6: Finally, understand that the presence of a catalyst helps the system reach equilibrium faster, but it does not change the final concentrations of reactants and products.
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