Which of the following best describes the result of using a catalyst in a chemical reaction?

A. The yield of product is increased.
B. A more desirable product is often formed.
C. A greater amount of heat energy is released.
D. The reaction is completed in a shorter time.



Answer :

Final answer:

Catalysts are substances that speed up chemical reactions by lowering the activation energy.


Explanation:

Catalysts are substances that increase the rate of a chemical reaction by decreasing the activation energy required for the reaction to occur. They do not get consumed in the reaction and can continue to catalyze further reactions. For example, enzymes are biological catalysts that speed up biochemical reactions in living organisms.


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