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

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 (T b) of water in a beaker after...

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Bibliographic Details
Published inJournal of chemical education Vol. 83; no. 1; pp. 64 - 68
Main Authors Moore-Russo, Deborah A, Cortes-Figueroa, Jose E, Schuman, Michael J
Format Journal Article
LanguageEnglish
Published Easton Division of Chemical Education 01.01.2006
Division of Chemical Education of the American Chemical Society
American Chemical Society
Subjects
Chemistry
Experiments
Graphing Calculators
Heat
Kinetics
Laboratory Equipment
Lesson plans
Reaction kinetics
Science education
Science Experiments
Science Instruction
Temperature sensors
Upper-Division Undergraduate
JCE DigiDemos: Tested Demonstrations
Calculator-Based Learning
Physical Chemistry
Calorimetry / Thermochemistry
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Summary: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 (T b) of water in a beaker after a sealed vial partially filled with water at temperature T v is submerged in it (T v ≠ T b, T v ≠ ambient temperature or final temperature), plots of temperature versus time that model the kinetics behavior of biphasic reactions can be produced.
ISSN:0021-9584
1938-1328
DOI:10.1021/ed083p64