in some of the reactions, a product formed acts as a catalyst, this phenomenon is called:
Correct answer: A. Autocatalysis
- A. Autocatalysis
- B. Enzyme Catalysis
- C. Negative catalysis
- D. Poisoning of a catalyst
Explanation
Option A is correct.In some of the reactions, a product formed acts as a catalyst, this phenomenon is called autocatalysis. Autocatalysis is a type of catalysis in which one of the products of the reaction acts as a catalyst for the reaction. This means that the reaction speeds up as the reaction proceeds. Autocatalysis is a common phenomenon in biological systems. For example, the enzyme horseradish peroxidase catalyzes the oxidation of hydrogen peroxide. In this reaction, the product of the reaction, water, acts as a catalyst for the reaction. This is because water can bind to the enzyme and stabilize its active site.
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About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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