Worksheet: Catalysts

In this worksheet, we will practice explaining and comparing the effects of homogeneous and heterogeneous catalysts on the rates of reactions.


Which one of the following statements about catalysts is false?

  • A Catalysts do not appear in the overall reaction equation.
  • B Catalysts increase the rate of a reaction.
  • C Catalysts are unreactive.
  • D After catalysts react, they are regenerated.


Which of the following is not a mechanism by which a catalyst increases the rate of a reaction?

  • AIncreasing the polarity of reactants
  • BIonizing reactants
  • CWeakening bonds in reactants
  • DReacting with reactants to form a less stable intermediate
  • EIncreasing the average kinetic energy of reactants

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