Reduction of Permanganate
Table of contents
Chemical Concepts Demonstrated
The solution turns burgandy in about 2.5 minutes, then changes from red to orange to amber to yellow over a period of four minutes. The solution is colorless in 12 minutes total.
Explanation (including important chemical equations)
In order to utilize this reaction effectively, one must run two or more trials simultaneously. There should be one that remains unaltered, and one or more that are modified with any of the following: a concentration change (more or less MnO4-in solution), a temperature change, or an additional catalyst (MnCl2). This reaction is useful for reaction rate changes because of the copious color changes and the length of time needed for the solution to become colorless without any procedural modifications.