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Ch 9: WEST Chemistry: Understanding Equilibriums

About This Chapter

Completing these lessons will prepare you for questions on the WEST-E Chemistry exam about chemical, dynamic and solubility equilibrium, as well as equilibrium calculations.

WEST Chemistry: Understanding Equilibriums - Chapter Summary

These lessons have been assembled to aid in your preparations for the Washington Education Skill Tests - Endorsements (WEST-E) Chemistry exam. They'll help you review the principles and calculations for chemical, dynamic and solubility equilibrium. Watch our expert instructors in this series of lesson videos to review:

  • Chemical and dynamic equilibrium
  • LeChatelier's Principle
  • Equilibrium constants and reaction quotients in equilibrium calculations and chemical reactions
  • The use of RICE Tables when completing equilibrium calculations
  • Solubility equilibrium and the solubility constant
  • Selective precipitation and the common ion effect

In addition to watching these lessons, take the lesson quizzes to discover any topics from the lessons you didn't understand and then use the video tags to improve your understanding of the material you missed. If you find a topic that confuses you, use the teacher tabs of the lessons to ask our instructors for assistance. Once you've reinforced your understanding of the material presented in this chapter be sure to take the practice chapter exam to see if you are ready to answer questions on the WEST-E Chemistry exam about equilibrium.

WEST Chemistry: Understanding Equilibriums Objectives

The WEST-E Chemistry exam is a computer-based certification exam used to assess future chemistry teachers' knowledge of chemistry. To do this, it asks a series of 110 multiple-choice questions. On test day, you will be asked to demonstrate your knowledge of chemistry by completing these questions in a two-hour and 30-minute testing session. Twenty-six percent of the material covered in this exam is about chemical reactions, and the section may include questions that will assess your understanding of the principles of chemical equilibrium.

6 Lessons in Chapter 9: WEST Chemistry: Understanding Equilibriums
Test your knowledge with a 30-question chapter practice test
Equilibrium: Chemical and Dynamic

1. Equilibrium: Chemical and Dynamic

Learn the definition of chemical equilibrium and how it is dynamic. Discover what the equilibrium constant is and how it shows whether the reaction favors the reactants or products. Learn how chemists designate equilibrium in an equation and how they show the difference in reaction rate.

LeChatelier's Principle: Disruption and Re-Establishment of Equilibrium

2. LeChatelier's Principle: Disruption and Re-Establishment of Equilibrium

Learn how Le Chatelier's Principle describes the disruption and re-establishment of equilibrium. Learn to explain the factors that disrupt equilibrium, such as concentration, temperature, and pressure. Learn how each of these factors affects a system in equilibrium.

Equilibrium Constant (K) and Reaction Quotient (Q)

3. Equilibrium Constant (K) and Reaction Quotient (Q)

In this lesson, we will first define and explain the notion of a chemical equilibrium. Then, you'll learn about the equilibrium constant and reaction quotient. Finally, we'll round off the lesson with a couple of examples to solidify what you've learned!

Using a RICE Table in Equilibrium Calculations

4. Using a RICE Table in Equilibrium Calculations

Learn what the RICE table is and how to fill in the table with the reaction, initial concentration, change in concentration and amount of product and reactants at equilibrium. Learn how to use the RICE table to calculate the concentrations and amounts and the equilibrium constant of equations at equilibrium.

Solubility Equilibrium: Using a Solubility Constant (Ksp) in Calculations

5. Solubility Equilibrium: Using a Solubility Constant (Ksp) in Calculations

Learn the definition of solubility and solubility constant (Ksp) in this lesson. Interpret solubility constants and make calculations involving the dissociation of a slightly soluble compound given molar solubility.

The Common Ion Effect and Selective Precipitation

6. The Common Ion Effect and Selective Precipitation

Learn what the common ion effect is, how to make equilibrium calculations involving it, and how to find the concentrations of ions when adding reactions in equilibrium to solutions that already contain ions.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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