Mix water from a large beaker back and forth into five other beakers. Your students will observe a variety of color changes. Solutions looking like red wine, lemonade, grape juice and others are produced with the final solution being a distinct yellow. Teacher Demonstration Notes included. Enough materials are included to perform the demonstration seven times.
Concepts: Complex ions, formation of precipitates.
Time Required: 20 minutes
Chemicals Provided: Iron(III) chloride solution, ammonium thiocyanate solution, tannic acid solution, and oxalic acid solution.
Additional ResourcesNo Additional Resources at the time.
Flinn Catalog/Reference Manual Page 402
Flinn Middle School Catalog/Reference Manual Page 386
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