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Colorful Iron Complexes—Chemical Demonstration Kit

By: The Flinn Staff

Item #: AP5946 

Price: $28.19

This item is temporarily out of stock. The expected available to ship date is 05/29/2024

With the Colorful Iron Complexes Chemical Demonstration Kit, distinguish solutions of iron(II) from iron(III) ions by performing redox reactions between iron’s oxidation states. Students discover oxidation numbers and write redox reactions.

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This item can only be shipped to schools, museums and science centers

Product Details

Easily distinguish solutions of iron(II) and iron(III) ions by performing redox reactions between iron’s two oxidation states. Answer the question of why iron(III) is the more stable of the two states. Simply add various complex ions to solutions of iron(II) or iron(III) and observe formation of the beautifully colored Prussian blue precipitate or of the deep blood-red complex, the confirming test for iron(III)! Students will gain practice in determining oxidation numbers, writing redox reactions and analyzing electron configurations. Teacher Demonstration Notes included.  

Concepts: Oxidation–reduction, oxidation numbers, complex ions, electron configuration, transition metals.
Time Required: 10 minutes
Chemicals Provided: Solutions of iron(III) chloride, iron(II) sulfate, potassium ferricyanide, potassium ferrocyanide, potassium thiocyanate, test tubes, stoppers.


Materials Included in Kit: 
Iron(III) chloride solution, 0.02 M, 500 mL
Iron(II) sulfate solution, acidified, 0.02 M, 500 mL
Potassium ferricyanide solution, 0.1 M, 10 mL
Potassium ferrocyanide solution, 0.1 M, 10 mL
Potassium thiocyanate solution, 0.1 M, 10 mL
Rubber stopper, solid, #4, 6
Test tube, disposable, 25 x 150 mm, 6

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Analyzing and interpreting data
Developing and using models

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter
HS-PS1.B: Chemical Reactions

Crosscutting Concepts

Systems and system models
Stability and change