About This Chapter
Kinetics in Chemistry - Chapter Summary and Learning Objectives
This chapter is designed to provide you with an introduction to kinetics and help you understand why some chemical reactions are faster or slower than others. The instructor will discuss the different factors that can hasten or lessen the rate of a reaction, such as pressure, temperature and surface area. You'll also learn about catalysts and how they can affect activation energy, or the least amount of effort needed to initiate a chemical reaction.
An important part of this lesson is concerned with rate laws, or the mathematical equations that describe what takes place during a chemical reaction. The instructor will show you how to identify the rate-determining or slowest step in a chemical reaction and use it to write your own rate law. When you've completed the chapter on kinetics in chemistry, you should be able to:
- Explain why chemical reactions occur, including why some develop faster than others.
- Understand the relationship between the rate constant and temperature.
- Calculate how temperature will speed up or slow down a given chemical reaction.
- Describe the role of a chemical catalyst in relation to activation energy, and define an activated complex.
- Determine the sequence of steps or reaction mechanism of a chemical reaction.
- Understand collision theory as an explanation for chemical reactions and rates.
|Rate of a Chemical Reaction: Modifying Factors||Identify the factors that affect the rates of chemical reactions.|
|Rate Constant and Rate Laws||Understand and determine rate laws using experimental data.|
|Rate of a Chemical Reaction: Effect of Temperature||Predict the effect of temperature on the rate of reaction.|
|Activation Energy and Catalysts||Define activation energy, including its relationship to reactions energy. Explain how a catalyst changes activation energy.|
|Reaction Mechanisms and The Rate Determining Step||Describe the sequence of a chemical reaction. Use the determining step to write a rate law.|
|Collision Theory||Use collision theory to explain the basis of chemical reactions and differences among rates.|
|Kinetics and Equilibrium||Describe the relationship between rate constants for the forward and reverse directions of a chemical reaction. Discuss the equilibrium constant for that reaction.|
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.
6. Collision Theory: Definition & Significance
This lesson will define and explain collision theory and explore how it is related to chemical reactions and reaction rates. So if you've ever wondered how two particles combine to form a new product, read on!
7. Chemical Kinetics, Reaction Rate Constant & Equilibrium Constant
Are formulas, rate constants, and chemical reactions getting you down? Don't worry, this lesson will explain how reaction rate and equilibrium constants are related to chemical reactions.
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Other chapters within the Science 102: Principles of Physical Science course
- Force, Mass & Newton's Laws of Motion
- Thermodynamics & Energy
- Principles of Thermodynamics
- Sound Waves & Optics
- Basics of Electric Power
- Magnetic Forces & Fields
- Experimental Chemistry in the Laboratory
- Properties of Matter in Chemistry
- Compounds & Concentration
- Basics of Chemical Bonding
- Properties of Gases & Gas Laws
- The Periodic Table
- Atoms & Atomic Theory
- Understanding Stoichiometry
- Acid-Base Chemical Reactions
- Chemical Equilibrium
- Studying for Science 102