What is the effect of adding a catalyst to a system at equilibrium?

Practice Questions

Q1
What is the effect of adding a catalyst to a system at equilibrium?
  1. Increases the rate of the forward reaction only
  2. Increases the rate of the reverse reaction only
  3. Increases the rate of both forward and reverse reactions
  4. Shifts the equilibrium position

Questions & Step-by-Step Solutions

What is the effect of adding a catalyst to 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 a chemical reaction can go in two directions: forward (reactants to products) and reverse (products to reactants).
  • Step 3: Recognize that a system at equilibrium means the rate of the forward reaction equals the rate of the reverse reaction.
  • Step 4: When a catalyst is added, it speeds up both the forward and reverse reactions equally.
  • Step 5: Since both reactions are sped up by the same amount, the ratio of products to reactants remains the same.
  • Step 6: Conclude that adding a catalyst does not change the position of equilibrium; it only helps the system reach equilibrium faster.
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