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Kinetics of a First-Order Reaction - Chemical Demonstration Kit

Kinetics of a First-Order Reaction - Chemical Demonstration Kit, AP6615
Catalog Number
Kinetics of a First-Order Reaction - Chemical Demonstration Kit
Product Description

By: Lew Brubacher
University of Waterloo, Waterloo, ON

First-order kinetics come alive as this hydrolysis reaction undergoes repeated color changes of yellow and blue. Bromthymol blue indicator, tert-butyl chloride, water, and a known amount of sodium hydroxide are added together forming a blue solution. tert-Butyl chloride reacts with water via hydrolysis to produce acid. When enough acid is produced to neutralize the base, the reaction instantly flashes to yellow-making it easy for students to recognize when a given amount of tert-butyl chloride has reacted. Students time how long it takes to neutralize each batch of base until all the tert-butyl chloride has reacted. Students use these time values to calculate the hydrolysis reaction order. A dramatic and simple demonstration that improves student understanding of the complex idea of reaction order. Includes Teacher Demonstration Notes, a reproducible student worksheet, and answer sheet. Enough materials are provided to perform the demonstration seven times.
Concepts: First-order kinetics, hydrolysis, indicators.
Time Required: 15 minutes
Materials Provided: Acetone, tert-butyl chloride, bromthymol blue indicator solution, sodium hydroxide solution, syringe, Beral-type pipets.


Additional Resources
No Additional Resources at the time.
Flinn Catalog/Reference Manual Page 367
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