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Ch 12: Kinetics in Chemistry

About This Chapter

Watch video lessons and learn about kinetics, a branch of chemistry that calculates and examines the rates of chemical reactions. These video lessons are short and engaging and make learning easy!

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.

VideoObjective
Rate of a Chemical Reaction: Modifying FactorsIdentify the factors that affect the rates of chemical reactions.
Rate Constant and Rate LawsUnderstand and determine rate laws using experimental data.
Rate of a Chemical Reaction: Effect of TemperaturePredict the effect of temperature on the rate of reaction.
Activation Energy and CatalystsDefine activation energy, including its relationship to reactions energy. Explain how a catalyst changes activation energy.
Reaction Mechanisms and The Rate Determining StepDescribe the sequence of a chemical reaction. Use the determining step to write a rate law.
Collision TheoryUse collision theory to explain the basis of chemical reactions and differences among rates.
Kinetics and EquilibriumDescribe the relationship between rate constants for the forward and reverse directions of a chemical reaction. Discuss the equilibrium constant for that reaction.

7 Lessons in Chapter 12: Kinetics in Chemistry
Test your knowledge with a 30-question chapter practice test
Rate of a Chemical Reaction: Modifying Factors

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).

Rate Constant and Rate Laws

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.

Rate of a Chemical Reaction: Effect of Temperature

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.

Activation Energy and Catalysts

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.

Reaction Mechanisms and The Rate Determining Step

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.

Collision Theory: Definition & Significance

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!

Chemical Kinetics, Reaction Rate Constant & Equilibrium Constant

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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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