Worksheet: Catalysts

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

Q1:

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.

Q2:

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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