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Redox
Reactions and Processes - I
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| Overview |
| Most
students find redox reactions to be one of the most
challenging aspects of geochemistry. We will spend three
weeks on this topic. This week, after defining some terms, I
spend a considerable amount of time showing you why
mastering redox reactions is worth the effort by way of a
number of practical examples. Then, I demonstrate a
systematic approach to balancing redox reactions that you
will need to master before you can advance. Next, after
defining the variables Eh and pe (indicators of redox
conditions in natural waters much like pH is an indicator of
acid-base conditions), I demonstrate how we can measure Eh (pe)
in the field. You will also learn hwo to apply the Nernst
equation to solve problems involving redox reactions. |
| Objectives |
 | Define oxidation and reduction. |
| See examples of the importance of redox
reactions to aqueous geochemistry. |
| Learn to balance redox reactions. |
| Define the variables Eh and pe. |
| Learn how to calculate Eh from redox
couples. |
| Learn how to measure Eh in the field
and understand the pitfalls of such measurements. |
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| Learning
Resources |
| Read: Chapter 5 (pp.
129-143) in Kehew (2001).
For each of the Lectures
choose the option(s) that best fits your needs |
| Lecture 8a |
Lecture 8b |
The following is a PDF version
of the PowerPoint notes for all Week 8 lectures with annotations.
PDF
version of lecture notes
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| Solutions
to Example Problems in Text |
| Problem 1
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Problem 2 |
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| The
following is a PDF version of the solutions to problems 1-3 in Chapter
5 of Kehew (2001)
Chapter
5 (Problems 1-3) answers
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| Homework |
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| Homework
Answers |
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