Module 3

Module 3—Electrochemical Reactions

Lesson 5—Redox Stoichiometry

Get Focused

In previous chemistry courses you learned about quantitative analysis—the determination of the quantity of substance present in a chemical system. Quantitative analysis is important in all branches of chemistry, design, and engineering.

Earlier you learned that 45 tonnes of rust were removed in the restoration of Edmonton’s High Level Bridge. Now that you know more about the process of corrosion, you might ask yourself how many tonnes of iron were oxidized and, therefore, what quantity of metal needed to be replaced?

Many domestic systems also involve redox reactions. One of these is iron filtration, a commonly used water treatment method for people who rely on water from a well. In Lesson 5 you will learn about the design and use of iron filtration. You will also further your understanding of stoichiometry in a quantitative analysis of chemical systems involving redox reactions.

Consider the following questions as you complete Lesson 5:

• How can a chemical system be analyzed using redox reactions?
• How is the stoichiometric method applied to redox systems?

Module 3: Lesson 5 Assignment

Download a copy of the Module 3: Lesson 5 Assignment to your computer now. You will receive further instructions on how to complete this assignment later in the lesson. The assignment has the following parts:

• Part 1: Lab—Analyzing a Hydrogen Peroxide Solution
• Part 2: Reflect and Connect

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.

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