### How Catalysts Affect the Rate of ReactionsA catalyst influences the rate of a chemical reaction by altering the activation energy required for the reaction to occur. Consider the following multiple-choice question about catalysts:**A catalyst increases the rate of a reaction by:**A) increasing the temperature.B) decreasing the temperature.C) increasing the activation energy.D) decreasing the activation energy.E) decreasing ΔH.**Explanation:**Catalysts work by providing an alternative reaction pathway with a lower activation energy. This makes it easier for reactant molecules to achieve the necessary energy to undergo a reaction, thus increasing the rate of reaction without being consumed in the process.The correct answer is:D) decreasing the activation energy.

Catalyst :- A substance which when added in small amount to the reaction mixture , increases rate…

Answered: A catalyst increases the rate of a…

A catalyst increases the rate of a reaction by: increasing the temperature. В) A) decreasing the temperature. increasing the activation energy. decreasing the activation D) energy. E) decreasing AH.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

### How Catalysts Affect the Rate of Reactions

A catalyst influences the rate of a chemical reaction by altering the activation energy required for the reaction to occur. Consider the following multiple-choice question about catalysts:

**A catalyst increases the rate of a reaction by:**

A) increasing the temperature.

B) decreasing the temperature.

C) increasing the activation energy.

D) decreasing the activation energy.

E) decreasing ΔH.

**Explanation:**
Catalysts work by providing an alternative reaction pathway with a lower activation energy. This makes it easier for reactant molecules to achieve the necessary energy to undergo a reaction, thus increasing the rate of reaction without being consumed in the process.

The correct answer is:
D) decreasing the activation energy.

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