The Reversible Orange and Blue Reaction - Chemical Demonstration Kit
By: Marie Sherman and Dr. Deborah Weil , Ursuline Academy, St. Louis, MO
Item #: AP8684
The Reversible Orange and Blue Reaction Oxidation-Reduction Chemical Demonstration Kit is an activity that will peak students' interest. The Walker quarry soil is contaminated. Students will perform tests on samples to solve the mystery.
This item can only be shipped to schools, museums and science centers
Astonishing, fascinating, amazing, and incredible are just a few words to describe this easy-to-do demonstration. A warm, clear, blue solution starts to bubble, the temperature rises, the bubbling becomes vigorous and suddenly the solution becomes an opaque orange-gold color. Since the reaction is reversible, you can repeat it several times by replenishing one of the reactants. An eye-catching way to introduce redox reactions to your students—especially great if your school colors are blue and orange (or gold). Teacher Demonstration Notes included. Enough materials are included to perform the demonstration seven times.
Concepts: Oxidation-reduction, complex ions.
Time Required: 25 minutes
Chemicals Provided: Potassium sodium tartrate solution, copper(II) sulfate solution, and hydrogen peroxide solution.