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2006
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January
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In the Classroom
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JCE DigiDemos: Tested Demonstrations
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Using a CBL Unit, a Temperature Sensor, and a Graphing Calculator To Model the Kinetics of Consecutive First-Order Reactions as Safe In-Class Demonstrations
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Deborah A. Moore-Russo
Department of Learning and Instruction, State University of New York at Buffalo, Buffalo, NY 14260-1000
José E. Cortés-Figueroa
Organometallic Chemistry Research Laboratory, University of Puerto Rico, Mayagüez, PR 00681-9019
checked by Michael J. Schuman
Department of Chemistry, East Stroudsburg University, East Stroudsburg, PA 18301-2999
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January 2006
Vol. 83 No. 1
p. 64
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| Abstract |
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A Calculator-Based Laboratory (CBL), a graphing calculator, and the cooling and heating (or heating and cooling) of water are used to model the behavior of consecutive (and biphasic) first-order reactions as safe in-class demonstrations. By measuring the temperature (Tb) of water in a beaker after a sealed vial partially filled with water at temperature Tv is submerged in it (Tv ≠ Tb, Tv ≠ ambient temperature or final temperature), plots of temperature versus time that model the kinetics behavior of biphasic reactions can be produced.
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| Supplement |
The temperature of the water in the beaker as a function of time data used in Figures 2 and 3, and for the five-minute experiment are available.
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 Contents |
Folder JCE2006p0064W containing Table 1.xls, Table 2.xls, and Table 3.xls (Microsoft
Excel)
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| Download |
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| More Information |
Citation |
Moore-Russo, Deborah A.; Cortés-Figueroa, José E. J. Chem. Educ. 2006 83 64.
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Keywords |
Calculator-Based Learning; Calorimetry / Thermochemistry; Demonstrations; Kinetics; Physical Chemistry; Quantitative Analysis; Upper-Division Undergraduate
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History |
Created:
Last Updated: |
12/1/2005
12/7/2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
2006
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January
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64
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