Using Demonstrations Involving Combustion and Acid–Base Chemistry To Show Hydration of Carbon Dioxide, Sulfur Dioxide, and Magnesium Oxide and Their Relevance for Environmental Climate Science
The nature of acidic and basic (alkaline) oxides can be easily illustrated via a series of three straightforward classroom demonstrations for high school and general chemistry courses. Properties of carbon dioxide, sulfur dioxide, and magnesium oxide are revealed inexpensively and safely. Additional...
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Published in | Journal of chemical education Vol. 93; no. 12; pp. 2063 - 2067 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Easton
American Chemical Society and Division of Chemical Education, Inc
13.12.2016
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society American Chemical Society |
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Abstract | The nature of acidic and basic (alkaline) oxides can be easily illustrated via a series of three straightforward classroom demonstrations for high school and general chemistry courses. Properties of carbon dioxide, sulfur dioxide, and magnesium oxide are revealed inexpensively and safely. Additionally, the very different kinetics of hydration of SO2 (rapid) and CO2 (slow) are evident. The pH changes observed by use of universal indicator provide striking visual evidence that makes the concepts of acidic and basic oxides less abstract and more concrete than verbal or written descriptions alone. By using the MgO solution for the SO2 hydration reaction, one can mimic environmental interactions that lead to the neutralization of alkaline and acidic species. Interestingly, the SO2 and CO2 demonstrations can easily be adapted to environmental chemistry courses and especially the very relevant realm of climate change science. The difference in hydration rates explains why CO2 is a greenhouse gas, but SO2 is not listed as one. Variations of the CO2 hydration demonstration reveal the sensitivity of oceans to acidification by dissolved CO2 and the relationship of fossil fuel combustion to ocean acidification. |
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AbstractList | The nature of acidic and basic (alkaline) oxides can be easily illustrated via a series of three straightforward classroom demonstrations for high school and general chemistry courses. Properties of carbon dioxide, sulfur dioxide, and magnesium oxide are revealed inexpensively and safely. Additionally, the very different kinetics of hydration of SO2 (rapid) and CO2 (slow) are evident. The pH changes observed by use of universal indicator provide striking visual evidence that makes the concepts of acidic and basic oxides less abstract and more concrete than verbal or written descriptions alone. By using the MgO solution for the SO2 hydration reaction, one can mimic environmental interactions that lead to the neutralization of alkaline and acidic species. Interestingly, the SO2 and CO2 demonstrations can easily be adapted to environmental chemistry courses and especially the very relevant realm of climate change science. The difference in hydration rates explains why CO2 is a greenhouse gas, but SO2 is not listed as one. Variations of the CO2 hydration demonstration reveal the sensitivity of oceans to acidification by dissolved CO2 and the relationship of fossil fuel combustion to ocean acidification. The nature of acidic and basic (alkaline) oxides can be easily illustrated via a series of three straightforward classroom demonstrations for high school and general chemistry courses. Properties of carbon dioxide, sulfur dioxide, and magnesium oxide are revealed inexpensively and safely. Additionally, the very different kinetics of hydration of SO[subscript 2] (rapid) and CO[subscript 2] (slow) are evident. The pH changes observed by use of universal indicator provide striking visual evidence that makes the concepts of acidic and basic oxides less abstract and more concrete than verbal or written descriptions alone. By using the MgO solution for the SO[subscript 2] hydration reaction, one can mimic environmental interactions that lead to the neutralization of alkaline and acidic species. Interestingly, the SO[subscript 2] and CO[subscript 2] demonstrations can easily be adapted to environmental chemistry courses and especially the very relevant realm of climate change science. The difference in hydration rates explains why CO[subscript 2] is a greenhouse gas, but SO[subscript 2] is not listed as one. Variations of the CO[subscript 2] hydration demonstration reveal the sensitivity of oceans to acidification by dissolved CO[subscript 2] and the relationship of fossil fuel combustion to ocean acidification. |
Audience | Higher Education Postsecondary Education Secondary Education |
Author | Rothenberger, Otis Shaw, C. Frank Webb, James W |
AuthorAffiliation | Department of Chemistry Illinois State University |
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Cites_doi | 10.1021/acs.jchemed.5b00676 10.1098/rspb.2015.0990 10.1021/ed400873x 10.1021/ed062p1124 10.1126/science.1155676 10.1021/ed033p517 10.1021/ed014p274 10.1017/CBO9781107415324 10.1021/ed041p610 10.1021/ed037p14 |
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Copyright | Copyright © 2016 American
Chemical Society and Division of Chemical Education, Inc. Copyright American Chemical Society Dec 13, 2016 |
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SubjectTerms | Acid-base neutralization Acidic oxides Acidification Atmospheric chemistry BASIC (programming language) Basic oxides Carbon dioxide Chemistry Climate Climate change Climate science College Science Combustion Demonstrations (Educational) Environmental chemistry Environmental Education Fossil fuels Fuel combustion Greenhouse effect Greenhouse gases Hydration Introductory Courses Kinetics Magnesium Magnesium oxide Neutralization Oceans Organic chemistry Oxides Reaction kinetics Science Education Scientific Concepts Secondary School Science Sulfur Sulfur dioxide Superconductors (materials) Visual observation |
Title | Using Demonstrations Involving Combustion and Acid–Base Chemistry To Show Hydration of Carbon Dioxide, Sulfur Dioxide, and Magnesium Oxide and Their Relevance for Environmental Climate Science |
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