Which of the following statements is true about catalysts? and Why?

a. Catalysts slow down the rate of chemical reactions

b. All catalysts are enzymes

c. Catalysts are used up during a chemical reaction

d. Catalysts lower the activation energy of a chemical reaction

Question

Gia Holt

Chemistry

24 December, 03:07

Which of the following statements is true about catalysts? and Why?

a. Catalysts slow down the rate of chemical reactions

b. All catalysts are enzymes

c. Catalysts are used up during a chemical reaction

d. Catalysts lower the activation energy of a chemical reaction

+5

Answers (1)

Know the Answer?

Macias · Answer 1

I believe the correct answer from the choices listed above is option D. Catalysts lower the activation energy of a chemical reaction. It is a substance which speeds up a reaction, but is chemically unchanged at the end of the reaction. It provides another pathway for the reaction to occur.

Which of the following statements is true about catalysts? and Why?a. Catalysts slow down the rate of chemical reactionsb. All catalysts are enzymesc. Catalysts are used up during a chemical reactiond. Catalysts lower the activation energy of a chemical reaction

Which of the following statements is true about catalysts? and Why?

a. Catalysts slow down the rate of chemical reactions

b. All catalysts are enzymes

c. Catalysts are used up during a chemical reaction

d. Catalysts lower the activation energy of a chemical reaction