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
Reaction rate is defined as the change in concentration of reactants or products in a chemical reaction over a specific period of time. Learn about reaction rate, chemical reactions, and the factors that affect the rate of chemical reactions (temperature, concentration, surface area, & catalysts).
2. Rate Constant and Rate Laws
Rate law is defined as the relationship between the rate of reaction and the concentration of the reactants. Learn about rate law, rate constant, and how to use rate law equations to determine reaction order for one or two reactants.
3. Rate of a Chemical Reaction: Effect of Temperature
The rate of a chemical reaction is affected by temperature. Explore this process, learn about the Arrhenius equation, review the exponential factor, and define frequency factor.
4. Activation Energy and Catalysts
Activation energy refers to the minimal quantity of energy required for compounds to experience a chemical reaction. Learn about activation energy and how chemical reactions occur, understand activated complex and transition state, and explore the role of catalysts in the body.
5. Reaction Mechanisms and The Rate Determining Step
A reaction mechanism refers to the steps that occur in a chemical reaction. Learn about reaction mechanisms, including intermediates, and understand the role of the rate-determining step, a step that is slower than the other steps and controls the reaction rate.
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
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- Chemical Equilibrium
- Studying for Science 102