Module 7
1. Module 7
1.2. In this Module
Module 7—Principles of Chemical Equilibrium
In This Module
Lesson 1—Introduction to Equilibrium
In Lesson 1 you will learn about the two types of equilibrium and how to differentiate between them. You will learn to identify the characteristics of chemical systems that are at equilibrium.
You will investigate the following lesson questions:
- What is equilibrium?
- What is happening in a system that is in equilibrium?
- How can you determine whether a system is open or closed?
Lesson 2—Dynamic Equilibrium
In Lesson 2 you will learn about the three types of equilibrium for chemical systems, and you will learn to identify forward and reverse processes in each.
You will investigate the following lesson questions:
- What is a reverse reaction and why is it important in an equilibrium system?
- What changes occur during dynamic equilibrium?
Lesson 3—Position of an Equilibrium
In Lesson 3 you will learn how an equilibrium can be established and what the relative proportions of products to reactants can be in a system at equilibrium.
You will investigate the following lesson question:
- Are all equilibrium states similar?
Lesson 4—Quantitative Perspectives of Equilibrium
In Lesson 4 you will learn to apply your skills in performing stoichiometric calculations to analyze chemical systems in equilibrium.
You will investigate the following lesson question:
- What procedures are used to calculate the chemical quantities for all substances in a chemical system?
Lesson 5—The Equilibrium Constant
In Lesson 5 you will learn about the equilibrium constant and the equilibrium law. The equilibrium law is an expression that relates the concentrations of the products to the reactants in a chemical system. It is used to calculate an equilibrium constant. You will come to understand how the value for the equilibrium constant is used to communicate information about the position of an equilibrium.
You will investigate the following lesson questions:
- What is the equilibrium constant?
- What information about an equilibrium is provided in an equilibrium constant?
Lesson 6—Le Châtelier’s Principle
In Lesson 6 you will learn how chemical systems at equilibrium react to the application of a stress. The stress can be a change to the concentration of one of the species in the system, a change in the system’s temperature, or a change in the volume (pressure) of the system. You will learn how to predict shifts in equilibrium and to identify the purpose of predicting and manipulating equilibrium by causing shifts.
You will investigate the following lesson question:
- What is Le Châtelier’s principle and how is it used to predict changes in chemical equilibrium systems?