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Which of the following statements about catalyst is false?

Chemistry
JAMB 2019

Which of the following statements about catalyst is false?

  • A. biological catalysts are called enzymes
  • B. catalyst do not appear in the balanced equation
  • C. catalyst reduce the activation energy for a reaction
  • D. catalysts do not alter the mechanism of the reaction and never appear in the rate low
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Correct Answer: Option D
Explanation

Option D says catalysts do not alter the mechanism of the reaction and never appear in the rate low. This statement is false; catalysts do alter the mechanism of a reaction by providing an alternative pathway with a lower activation energy, and while they do not appear in the overall balanced chemical equation, they can be involved in individual steps of the reaction mechanism, meaning they may appear in the rate law for a specific step of the reaction. 

There is an explanation video available below.


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Explanation Video

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