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14 octobre 2013 1 14 /10 /octobre /2013 08:40


Luminescent Chemical reaction



Test tubes, yogurt pots, plastic pipette, graduated cylinder, luminol, hydrogen peroxide, glowing, coloring substance (eosin, fluorescein, methylene blue) and potassium ferricyanide.



We measure 20 ml of potassium ferricyanide. Pour it in a yogurt pot. With a plastic pipette pour 5ml of potassium ferricyanide in each of the 4 test tubes. Add two drops of colorant and mix it  to make the substance homogenous. Pour 4 drops of hydrogen peroxide in each tube. Pour the luminol in a yogurt pot. Pour drops of luminol in the test tubes. We can see a colored light.


How does it work ?

The chemical reaction between hydrogen peroxide and luminol produces colored light. When the chemical reaction is over, the production of light ends.



This chemical reaction produces its own light as a con


sequence it's a primary light source.

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