How do catalysts affect the energy of reactions?

A. They lower the activation energy required for the reactions to take place.

B. They absorb excess energy that would otherwise stop reactions from happening.

C. They act as fuel that burns and provides energy for the reactions.

D. They act as low-energy materials that are used to make the products of the reactions.

Question

Biology

Hugo Burns

8 October, 20:51

How do catalysts affect the energy of reactions?

A. They lower the activation energy required for the reactions to take place.

B. They absorb excess energy that would otherwise stop reactions from happening.

C. They act as fuel that burns and provides energy for the reactions.

D. They act as low-energy materials that are used to make the products of the reactions.

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Answers (1)

Know the Answer?

Lea Woodard · Answer 1

A: They lower the activation energy required. Enzymes, which are biological catalysts, allow reactions to proceed at a sufficiently high rate at temperatures conducive to life.

Catalysts are just a broader term in regards to chemical reactions. They are a substance that increases the rate of chemical reaction, without itself undergoing anybpermanent chemical changes (ie they are not part of the final product).

They achieve this by lowering the energy required to start a reaction.