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Allen, Andrew; Anderson, Michael; Mattson, Bruce – Journal of Chemical Education, 2009
Potassium dioxide, KO[subscript 2], (potassium superoxide) is an important compound owing to its ability to react with carbon dioxide to produce oxygen. This unique ability is employed to design rebreathing devices for submarines, space vehicles, and space suits. "Rebreathers" for firefighters and miners have also been designed using potassium…
Descriptors: Demonstrations (Educational), Chemistry, Science Instruction, Scientific Principles
Klotz, Elsbeth; Mattson, Bruce – Journal of Chemical Education, 2009
In these two classroom demonstrations, students observe the reaction between H[subscript 2] gas and Pd foil. In the first demonstration, hydrogen and palladium combine within one minute at 1 atm and room temperature to yield the non-stoichiometric, interstitial hydride with formula close to the maximum known value, PdH[subscript 0.7]. In the…
Descriptors: Kinetics, Inorganic Chemistry, Demonstrations (Educational), Laboratory Procedures