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Ch 23: ILTS Biology: Equilibrium

About This Chapter

Watch these lessons as you prepare for the ILTS Biology exam to refresh your knowledge about principles, terms and calculations involving equilibrium in a solution. We provide many study tools to help you get ready for the exam.

ILTS Biology: Equilibrium - Chapter Summary

Let us help you review information on equilibrium in a solution and calculations involving it. You'll be prepared for ILTS Biology exam questions on the following topics:

  • LeChatelier's Principle
  • Equilibrium calculations with a RICE table
  • Solubility constant in calculations
  • The common ion effect
  • Acid-base equilibrium
  • Acid-base buffers
  • Titration

You can study these lessons as your schedule allows, on a computer, tablet or smartphone. A written transcript highlights important terms and phrases so you'll understand what is key in each lesson. There's a clickable timeline that makes it easy to hop back to the specific part of the video you want to review without having to re-watch the whole lesson.

ILTS Biology: Equilibrium Chapter Objectives

Illinois requires passing the ILTS Biology exam of anyone who wants certification to teach biology in a state public school. There are 125 multiple-choice questions on the ILTS Biology exam, and they are categorized into six subareas. Questions on equilibrium are in the Physical Science subarea.

Our short lesson quizzes are also multiple choice, so completing them can give you an idea of what you'll encounter on exam day. These quizzes also help you gauge your learning and determine any areas where your knowledge is weak.

7 Lessons in Chapter 23: ILTS Biology: Equilibrium
Test your knowledge with a 30-question chapter practice test
LeChatelier's Principle: Disruption and Re-Establishment of Equilibrium

1. 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.

Using a RICE Table in Equilibrium Calculations

2. 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

3. 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

4. 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.

Acid-Base Equilibrium: Calculating the Ka or Kb of a Solution

5. Acid-Base Equilibrium: Calculating the Ka or Kb of a Solution

In this lesson, you will review acid and base strength and acid and base dissociation. You will then learn what acid and base dissociation constants (Ka and Kb) are, what they mean, and how to perform calculations involving them.

Acid-Base Buffers: Calculating the pH of a Buffered Solution

6. Acid-Base Buffers: Calculating the pH of a Buffered Solution

Learn what a buffer is, how it works, and why we benefit from having our blood buffered. Learn how to calculate the pH of a buffered solution before an acid or base is added and how the pH changes after an acid or base is added.

Titration: Overview, Curves & Calculations

7. Titration: Overview, Curves & Calculations

Titrations are useful to determine the molarity of a sample or a compound in a sample. We will learn how to perform a titration and how to calculate the molarity of a sample based on the titration.

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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