27. Which of the following statements about a solid catalyst is NOT true ? a) The catalyst participates in the reaction it catalyzes b) The catalyst does not participate in the reaction it catalyzes c The catalyst must be chosen through experiment d) The rate of reaction increases as the catalyst is pulverized.
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The correct answer to the above question is- b) The catalyst does not participate in the reaction it catalyzes.
- Catalysts are substances that participate in the reaction and increase its rate by decreasing activation energy. They are not consumed in a reaction.
- Catalysts are highly specific for a particular reaction. When different catalysts are used to catalyse the same reaction, different products may be formed. Hence, they must be chosen through experiment.
- When pulverized or fine particles of catalyst are used in reaction, the rate of reaction increases further due to increased surface area.
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