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Oxygen Reactions and explosions involving oxygen and its compounds are demonstrated.
Reactions |
Descriptive Chemistry
Dust Explosion Here are two demonstrations of the principle behind a grain elevator explosion. Lycopodium powder is dispersed inside closed containers containing a lighted candle resulting in explosions.
Agricultural Chemistry |
Applications of Chemistry |
Reactions
Organic Compounds An assortment of organic compounds are ignited under various conditions.
Laboratory Experiments on the Electrochemical Remediation of the Environment. Part 7: Microscale Production of OzoneJorge G. Ibanez, Rodrigo Mayen-Mondragon, M. T. Moran-Moran, Alejandro Alatorre-Ordaz, Bruce Mattson, and Scot Eskestrand Ozone, a powerful oxidizing and disinfecting agent, is produced electrochemically in the undergraduate laboratory with simple equipment and under very mild conditions. Tests are given to characterize it, to observe its action in simulated environmental applications, and to measure its rate of production. Ibanez, Jorge G.; Mayen-Mondragon, Rodrigo; Moran-Moran, M. T.; Alatorre-Ordaz, Alejandro; Mattson, Bruce; Eskestrand, Scot. J. Chem. Educ.2005, 82, 1546.
Aqueous Solution Chemistry |
Descriptive Chemistry |
Electrochemistry |
Electrolytic / Galvanic Cells / Potentials |
Laboratory Equipment / Apparatus |
Microscale Lab |
Oxidation / Reduction |
Reactions
The Determination of the Percent of Oxygen in Air Using a Gas Pressure SensorJames Gordon and Katherine Chancey A new detection method is applied to a classic experiment in which gaseous atmospheric oxygen in a test tube is reacted with the iron in steel wool to produce rust. A gas pressure sensor interfaced to a calculator-based data collection system was used to measure the percent of oxygen in the air as the reaction proceeded. The results from the calculator-based experiment were compared to the results from a more traditional water-measurement experiment. The average percent of oxygen obtained using the calculator system was 19.4 0.4%. Gordon, James; Chancey, Katherine. J. Chem. Educ.2005, 82, 286.
Atmospheric Chemistry |
Gases |
Oxidation / Reduction |
Reactions
The Persistence of the Candle-and-Cylinder MisconceptionJames P. Birk and Anton E. Lawson There is a persistent misconception that when a lighted candle is supported in a container of water and a closed cylinder is lowered over the candle, the candle is extinguished after a time by complete consumption of the oxygen in the cylinder, with a volume change corresponding to the amount of oxygen in the air. This misconception has appeared in the literature periodically for many years. Here, we present a number of experiments that refute this misconception. Birk, James P.; Lawson, Anton E. J. Chem. Educ.1999, 76, 914.
