|
|
| Home > JCE Print > Journal of Chemical Education > Issues >
2004
>
February
> |
|
In the Laboratory
|
|
|
|
A Simulation of the Interaction of Acid Rain with Soil Minerals
|
Amber L. Schilling, Kenneth R. Hess, Phyllis A. Leber, and Claude H. Yoder
Department of Chemistry, Franklin and Marshall College, Lancaster, PA 17604-3003
|
|
February 2004
Vol. 81 No. 2
p. 246
|
|
|
|
|
|
|
| Abstract |
|
The environmental issue of acid rain is incorporated into a five-part laboratory project that employs quantitative analytical laboratory techniques, such as acid–base titrations and gravimetric analysis of aqueous cations. The student observes the effectiveness of soil at consuming excess acidity in rainwater and observes the mobilization of Al3+ and Ca2+ from these interactions. The first four parts of the project involve passing a sulfuric acid solution through a column containing aluminum hydroxide, limestone, montmorillonite clay, or synthetic zeolites (molecular sieves). After its passage through the column, the acid solution is analyzed by titration to determine the resulting acidity and by precipitation of the aqueous Al3+ or Ca2+ with 8-hydroxyquinoline. In the fifth part of the project, an aluminum sulfate solution is passed through a column containing molecular sieves to observe the absorption of Al3+ once it has been mobilized from minerals by acid rain. The five-part project can be treated as an individual student project to be completed during multiple consecutive lab sessions, or divided up as a group or class project that can be completed during one or two lab periods.
|
| Supplement |
Instructions for the students and notes for the instructor are available.
|
 Contents |
JCE2004p0246W.doc (Microsoft Word)
|
| Download |
|
|
| More Information |
Citation |
Schilling, Amber L.; Hess, Kenneth R.; Leber, Phyllis A.; Yoder, Claude H. J. Chem. Educ. 2004 81 246.
|
Keywords |
Aluminum; Analytical Chemistry; Calcium; Clays / Clay Chemistry; Environmental Chemistry; General Chemistry; Green Chemistry; Laboratory Instruction; Quantitative Analysis
|
History |
Created:
Last Updated: |
January 5, 2004
February 25, 2005
|
|
|
|
|
|
| Home > JCE Print > Journal of Chemical Education > Issues >
2004
>
February
> Page
246
|
|
|
| JCE HS CLIC |
|
Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
|
| Contributions Welcome |
| JCE welcomes your submission |
| Advertisers |
| In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first. |
| Be An Ambassador |
| Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants. |
|
