what do catalysts do in a chemical reaction

Best answer


Increases the rate of a chemical reaction

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  • What is the role of a catalyst?

  • Updated April 18, 2018 A catalyst is a chemical substance that affects the rate of a chemical reaction by altering the activation energy required for the reaction to proceed. This process is called catalysis. A catalyst is not consumed by the reaction and it may participate in multiple reactions at a time.

  • How do catalysts speed up chemical reactions?

  • Usually when someone refers to a catalyst, they mean a positive catalyst, which is a catalyst that speeds up the rate of a chemical reaction by lowering its activation energy. There are also negative catalysts or inhibitors, which slow the rate of a chemical reaction or make it less likely to occur.

  • What is catalysis reaction in chemistry?

  • The phenomenon where catalysts show their activity define as the catalysis reaction in chemistry. It is mainly two types like homogeneous or heterogeneous catalysis. For example, hydrogen ion acts as a positive catalyst in the hydrolysis of ester or sugar without effect on chemical equilibrium.

  • What happens to the kinetic energy when a catalyst is used?

  • Remember that with a catalyst, the average kinetic energy of the molecules remains the same but the required energy decreases (see image above). The effect of a catalyst on the activation energy of an endothermic reaction. The catalyst would act in the same way for an exothermic reaction.

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