Amazing Chemistry Magic Trick!
A magic trick, chemistry style!
An explanation is below, so if you want to try and guess how everything worked, you can see if you are correct or not.
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The water is actual pure distilled water--no tricks there
1) Turning into "grape juice"--The first beaker had a very small amount of potassium permanganate on the bottom (KMnO4). Even a small amount of this powder creates a very intense purple-pink solution.
2)Turning into "Muddy water"-- I then poured the KMnO4 solution into a dilute solution of sodium metabisulfite. The metabisulfite reduces, or gives electrons, to the permanganate, reducing it to brown manganese dioxide (MnO2).
3) "Purifying" the "muddy water" -- I simply let the MnO2 react with the metabisulfite further to fully reduce it to colorless Mn2+ ions. The permanganate wasn't instantly converted to Mn2+ because the metabisulfite solution was dilute, and this low concentration slowed down the reaction.
This beaker also had a few drops of phenolphthalein in it, which is important for the next step.
4) Turning it into "Pink Lemonade"--The 4th beaker contained a few drops of NaOH solution. When the phenolphthalein from beaker #3 is in a basic solution (like NaOH), it turns pink.
5) Turning it into "vodka"--The 5th beaker had just enough vinegar to neutralize the NaOH and make the solution slightly acidic. Phenolphthalein turns clear in acidic conditions.
6)Turning it into "lemonade"--The 6th beaker contained a small amount of potassium dichromate (K2Cr2O7) powder. This dissolves to give a yellow solution.
7) Turning it into "limeade"--The last beaker had a metabisulfite solution in it. This reduced the yellow dichromate to a lower oxidation state, which has a green color in solution.
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