Extracting IODINE from IODINE TINCTURE AT HOME! (Chemistry experiment)
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In this video, see how to extract iodine from iodine tincture at home. This is an easy chemistry experiment that can be done at home with readily available materials.
To extract iodine, the iodine tincture must first have a composition of water, 2% iodine, potassium iodide or sodium iodide, and possibly alcohol.
Sulfuric acid, hydrochloric acid, or vinegar, and hydrogen peroxide are added.
Iodine is poorly soluble in water, but in the presence of iodide ions, it can combine to form the triiodide ion, which is soluble and gives the dark brown color. When hydrogen peroxide is added in an acidic medium, the ion is oxidized, that is, it loses its electrons and becomes elemental iodine.
It is a redox reaction, since there is a transfer of electrons, and consequently a change in oxidation number.
Iodine sublimes at room temperature, that is, it passes from the solid to the gaseous state without passing through the liquid state, so it must be stored in a closed container and protected from light, as light facilitates sublimation, and iodine vapors are dangerous and can cause health problems.
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