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Decomposition Kinetics of Hydrogen Peroxide: Novel Lab Experiments Employing Computer Technology
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Abstract
The quantitative catalytic decomposition of hydrogen peroxide has been used in many general chemistry experiments. The typical procedure involves measuring the volume of oxygen generated in the reaction under constant pressure using a displacement method and calculating the necessary data. A pressure sensor interfaced with a computer using LabWorks II software allowed us to modify this reaction and to measure the change in pressure, at constant volume. Since the software allows the collection and display of real-time data and the ability to import the data to Excel, we re-examined the kinetics of this reaction. Using different concentrations of hydrogen peroxide and catalase enzyme and graphing initial concentrations versus initial rates, we determined the rate and the order of the decomposition.
Keywords (Audience):
First-Year Undergraduate / GeneralKeywords (Domain):
Laboratory InstructionKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
GasesCiting Articles
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This article has been cited by 4 ACS Journal articles (4 most recent appear below).
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- Received: August 03, 2009
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