Introduction: Blue Bottle Experiment
Hi there!. This is a simple experiment. There is a bottle contain a liquid like water. When it shake, that liquid turns blue color. Just try to do it.
Chemicals that we are using in this experiment are easy to find.
- Sodium hydroxide
Methylene blue (This chemical can be found from stores that sell aquarium fish.)
A volumetric flask
if you don't have a flask, you can use a bottle. (glass or plastic)
first get 1 gram of sodium hydroxide.(if you don't have a scale, just get a very little amount.) now dissolve it with about 20ml of water. (cold water is better)
Not get 5 grams of glucose and mix with 40ml of water. Then add few drops from methylene blue and mix it again. Then add it to the flask. (or bottle)
This is the final step. now add sodium hydroxide solution to the flask and mix it. Now wait for a few seconds.
after few seconds the solution turns colorless. Now shake the bottle. It turns blue. and again after few seconds the solution turns colorless.
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4 years ago
Wow! I did not know that Methylene blue can be used. Hmm the theory is that the dye is being oxidized. by gluconic acid. Glucose and lye without oxygen produce that and when oxygen is present it gives electrons back to dye. That the blue bottle exper.
Oxygen also generates H202 that converts colorless dye into color dye due to oxidization of NH+ to NH. See wiki.
Methylene blue and Indigo carmine are similar dyes. Cool expect you should give warning s about the Lye and the dye.