Writing chemical reactions
Vanderbilt UniversityAuthor Profile
Used this activity? Share your experiences and modifications
This is a simple introduction to writing weathering and redox reactions by hand and by using the Rxn program in the Geochemists Workbench. Its usually the first HW assignment I give in my class "Geochemical Modeling".
Upper level undergraduate and graduate classes in Geochemistry or Geochemical Modeling.
Skills and concepts that students must have mastered
Knowledge of how to write balanced chemical reactions and corresponding equilibrium constant expressions (need to know how to use logarithms). Familiarity with the phase rule and how to interpret activity diagrams.
How the activity is situated in the course
Homework assignment #1. The second homework assignment is also available as an activity sheet.
Content/concepts goals for this activity
Exercise teaches students how to write complex weathering and redox reactions and the corresponding equilibrium constant expressions. It also asks them to use the expressions to answer geochemically relevant questions.
Higher order thinking skills goals for this activity
Development of geochemical models, interpretation
Other skills goals for this activity
Use of the Geochemists Workbench
Description of the activity/assignment
In this homework exercise students learn how to write balanced chemical equations describing weathering and redox reactions by hand and by using the Geochemists Workbench.
Determining whether students have met the goals
It is a quantitative exercise, so it is easy to see if the obtained the correct numerical answers.More information about assessment tools and techniques.
Download teaching materials and tips
- Editable Assignment for Instructor with select answers (Microsoft Word 40kB Jun28 10)
- Student handout (Acrobat (PDF) 167kB Jun28 10)
- Rxn file for problems #2a-d ( 238bytes Jun28 10)
- Rxn file for problem #2e ( 243bytes Jun28 10)
- Rxn file for problem #3 ( 228bytes Jun28 10)