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The Iodide-Catalyzed Decomposition of Hydrogen Peroxide: A Simple Computer-Interfaced Kinetics Experiment for General Chemistry
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Abstract
A kinetics experiment appropriate for use in a General Chemistry course is described. The reaction studied is the iodide-catalyzed decomposition of hydrogen peroxide. The rate of oxygen production is measured as a function of time using a computer-interfaced pressure transducer. The data are analyzed to determine the order of the reaction with respect to iodide and hydrogen peroxide concentrations and to determine the rate constant.
Keywords (Audience):
First-Year Undergraduate / GeneralKeywords (Domain):
Laboratory InstructionKeywords (Feature):
Computer SeriesKeywords (Pedagogy):
Computer-Based LearningKeywords (Subject):
IodineCiting Articles
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This article has been cited by 10 ACS Journal articles (5 most recent appear below).
Fenton Digestion of Milk for Iodinalysis
C. Phillip Shelor, Catrina A. Campbell, Martina Kroll, Purnendu K. Dasgupta, Tammy L. Smith, Amir Abdalla, Mike Hamilton, and Terri Wiley MuhammadAnalytical Chemistry2011 83 (21), 8300-8307Fenton Digestion of Milk for Iodinalysis
C. Phillip Shelor, Catrina A. Campbell, Martina Kroll, Purnendu K. Dasgupta, Tammy L. Smith, Amir Abdalla, Mike Hamilton, and Terri Wiley MuhammadAnalytical Chemistry2011 83 (21), 8300-8307Iodine is an essential micronutrient especially important in the neurodevelopment of infants. Spot samples of urinary iodine (UI) are used as an epidemiologic index of adult iodine nutrition. Individual infant iodine nutrition is of vital importance, but ...
A Potential Source of Free Radicals in Iodine-Based Chemical Oscillators
Dragomir R. Stanisavljev, Maja C. Milenković, Miloš D. Mojović, and Ana D. Popović-BijelićThe Journal of Physical Chemistry A2011 115 (11), 2247-2249A Potential Source of Free Radicals in Iodine-Based Chemical Oscillators
Dragomir R. Stanisavljev, Maja C. Milenković, Miloš D. Mojović, and Ana D. Popović-BijelićThe Journal of Physical Chemistry A2011 115 (11), 2247-2249The iodide−peroxide system in an acidic medium was investigated as a potential source of free radicals in iodine-based chemical oscillators. The radicals were detected by EPR spin-trapping using spin-trap 5-(tert-butoxycarbonyl)-5-methyl-1-pyrroline N-...
Gas Pressure Monitored Iodide-Catalyzed Decomposition Kinetics of H2O2: Initial-Rate and Integrated-Rate Methods in the General Chemistry Lab
Frazier Nyasulu and Rebecca BarlagJournal of Chemical Education2010 87 (9), 948-949Gas Pressure Monitored Iodide-Catalyzed Decomposition Kinetics of H2O2: Initial-Rate and Integrated-Rate Methods in the General Chemistry Lab
Frazier Nyasulu and Rebecca BarlagJournal of Chemical Education2010 87 (9), 948-949The reaction kinetics of the iodide-catalyzed decomposition of H2O2 using the integrated-rate method is described. The method is based on the measurement of the total gas pressure using a datalogger and pressure sensor. This is a modification of a ...
Wash Bottle Laboratory Exercises: Iodide-Catalyzed H2O2 Decomposition Reaction Kinetics Using the Initial Rate Approach
Rebecca Barlag and Frazier NyasuluJournal of Chemical Education2010 87 (1), 78-80Wash Bottle Laboratory Exercises: Iodide-Catalyzed H2O2 Decomposition Reaction Kinetics Using the Initial Rate Approach
Rebecca Barlag and Frazier NyasuluJournal of Chemical Education2010 87 (1), 78-80A wash bottle water displacement scheme is used to determine the kinetics of the iodide-catalyzed H2O2 decomposition reaction. The reagents (total volume 5.00 mL) are added to a test tube that is placed in a wash bottle containing water. The mass of the ...
A Quick and Accurate Oxygen-Based Pressure-Sensor Assay for Catalase Activity
Megan E. Lewis , Rebecca M. Levine , John T. York and W. Tandy GrubbsJournal of Chemical Education2009 86 (10), 1227A Quick and Accurate Oxygen-Based Pressure-Sensor Assay for Catalase Activity
Megan E. Lewis , Rebecca M. Levine , John T. York and W. Tandy GrubbsJournal of Chemical Education2009 86 (10), 1227A method is described for investigating the catalytic decomposition of hydrogen peroxide by using a computer-interfaced pressure sensor to follow the evolution of O2(g) inside a closed reaction vessel. The pressure sensor and accompanying glassware are ...
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- Received: August 03, 2009
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