Chemistry: Catalysts Multiple Choice Question

In summary, a catalyst is a substance that speeds up a chemical reaction without undergoing any permanent chemical change itself. It works by providing an alternative pathway for the reaction to occur with lower activation energy, which can be achieved by stabilizing the transition state or bringing the reactants closer together. Using catalysts has several benefits, such as increasing the rate of reaction, reducing the amount of energy required, and producing a higher yield of products. There are different types of catalysts, including heterogeneous, homogeneous, and biological catalysts, each with its own unique properties and mechanisms. Catalysts can be used multiple times but may lose effectiveness over time and need to be replaced.
  • #1
tensirk
12
0

Homework Statement



Which of the following are ways that catalysts can speed up reactions rates? You must check all answers that apply.
A.) Increase the activation energy.
B.) Decrease the energy of activation.
C.) Change the path of the reaction.
D.) Speedup the reaction without changing k.
E.) Increase the collision frequency.


Homework Equations


None?


The Attempt at a Solution


I believe B and E are definitely correct, but I am unsure of all of the other answers. Any guidance would be wonderful!
 
Physics news on Phys.org
  • #2
C is also correct. A catalyst offers a different path for the reaction.
 

Related to Chemistry: Catalysts Multiple Choice Question

1. What is a catalyst?

A catalyst is a substance that speeds up a chemical reaction without undergoing any permanent chemical change itself. It lowers the activation energy needed for the reaction to occur, making it happen more quickly.

2. How do catalysts work?

Catalysts work by providing an alternative pathway for the reaction to occur with lower activation energy. This can be achieved by stabilizing the transition state or by bringing the reactants closer together, allowing for more frequent collisions.

3. What are the benefits of using catalysts?

Catalysts have several benefits, including increasing the rate of a reaction, allowing for more efficient use of resources, and reducing the amount of energy required for a reaction to occur. They can also help to produce a higher yield of products and reduce unwanted byproducts.

4. Are all catalysts the same?

No, not all catalysts are the same. There are different types of catalysts, including heterogeneous, homogeneous, and biological catalysts. Each type has its own unique properties and mechanisms for catalyzing reactions.

5. Can a catalyst be used more than once?

Yes, a catalyst can be used multiple times. They are not consumed in the reaction and can be recovered and reused. However, over time, the catalyst may lose its effectiveness and need to be replaced.

Similar threads

Factors Affecting the Rate of Reactions
    • Biology and Chemistry Homework Help
Replies
2
Views
8K
Catalyst increasing both forward and reverse reaction rate
    • Biology and Chemistry Homework Help
Replies
2
Views
2K
Gravitational equipotential multiple choice problem
    • Introductory Physics Homework Help
Replies
4
Views
858
MHB Multiple choice test : random variable
    • Set Theory, Logic, Probability, Statistics
Replies
7
Views
1K
Question about acid and base multiple choice solving
    • Biology and Chemistry Homework Help
Replies
7
Views
2K
Medical Hello, I found a weird sentence in a book about enzymes....
    • Biology and Medical
Replies
4
Views
1K
Question Related To Volume Strength Of H2O2.
    • Biology and Chemistry Homework Help
Replies
3
Views
6K
Deriving a Rate Equation for a Reversible Elementary Mechanism
    • Biology and Chemistry Homework Help
Replies
15
Views
3K
Multiple-Choice Questions on the Behaviour of Waves and Light 😁
    • Introductory Physics Homework Help
Replies
5
Views
1K
Organic Chemistry: Sn2 Reactions - proposing a synthesis
    • Biology and Chemistry Homework Help
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top