About This Chapter
Kinetics - Chapter Summary and Learning Objectives
From photosynthesis to combustion, chemical reactions keep the world moving, but how quickly do these changes take place? Our introduction to kinetics will examine the factors that affect the rate of chemical reactions. We'll see how to use experimental data to determine and interpret these rate laws. We'll turn up the heat with an entire lesson that predicts the effect of temperature on chemical reaction rates and tease apart reaction mechanisms to examine the sequence of steps that make up a chemical reaction.
Our brief, entertaining videos are full of graphics to help you comprehend these concepts. You can submit questions to an instructor if you're unclear on a topic, and our lessons come with video transcripts and multiple-choice quizzes. These kinetics lessons will show you:
- What the role of rate constants is in the establishment of rate laws
- How activation energy relates to the energy of a reaction
- How catalysts can lower activation energy
- What the rate determining step does
|Rate of a Chemical Reaction: Modifying Factors||Name factors that influence the speed of chemical reactions.|
|Rate Constant and Rate Laws||Explain rate laws and how to use experimental data to determine them.|
|Rate of a Chemical Reaction: Effect of Temperature||Analyze how temperature impacts the rate of chemical reactions.|
|Activation Energy and Catalysts||Find out what activation energy is and how a catalyst can change it.|
|Reaction Mechanisms and The Rate Determining Step||Define reaction mechanism, rate determining step and rate law.|
1. Rate of a Chemical Reaction: Modifying Factors
Why are some reactions much faster than others? Is it possible to change how fast a reaction occurs? In this lesson, you will learn what the rate of a chemical reaction is. You will also discover how factors such as temperature, concentration, surface area, and catalysts impact reaction rates.
2. Rate Constant and Rate Laws
Learn what the rate law is and how the rate constant relates to it. Learn what reaction order is and how to determine reaction order when given experimental data containing concentration and reaction rate.
3. Rate of a Chemical Reaction: Effect of Temperature
Learn how temperature affects reaction rates. Discover the rate law as well as how the Arrhenius equation relates to the rate law and predicts the effect of temperature on the rate of reaction.
4. Activation Energy and Catalysts
Learn how to define activation energy and how it relates to a reaction's energy. Learn what an activated complex is and where it fits into an activation energy diagram. Discover how a catalyst works to change the activation energy of a reaction and what this means to metabolism in the body.
5. Reaction Mechanisms and The Rate Determining Step
This lesson explores what a reaction mechanism is and how it relates to the speed of a reaction. You'll discover how to pinpoint the rate-determining step and learn how to write a rate law based on the rate-determining step.
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