Module 5 Intro

Module 5—Acids and Bases

Lesson 3—Strength of Acids and Bases

Get Focused

Many people enjoy soft drinks. Although there are many different brands and flavours of soft drinks, they all share one common characteristic—acid.

Two acids—citric acid and phosphoric acid—are commonly used in the preparation of soft drinks. As you may have guessed, these acids are used to influence the taste of the beverage, offsetting its sweetness. But isn’t there a risk to ingesting acids? You may also wonder how the presence of these acids influences the pH, and other properties, of soft drinks.

In this lesson you will investigate the acids commonly used in foods, and you will compare them to other acids you have encountered in laboratory experiments.

Essential Questions

• How are the empirical properties of weak acids and bases different from those of strong acids and bases?
  
  
• What are polyprotic acids and bases?

Module 5: Lesson 3 Assignment

Save a copy of the Module 5: Lesson 3 Assignment to your course folder. Later in the lesson you will receive more information about how to complete this assignment and when to submit it to your teacher.

You must decide what to do with the questions that are not marked by the teacher.

Remember that these questions provide you with the practice and feedback that you need to successfully complete this course. You should respond to all the questions and place those answers in your course folder.