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Iodine Clock Reaction

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Uploaded by on Jul 16, 2010

In the "take 2" of the iodine clock reaction, we've discovered that we can evaporate the iodine product, giving us pure elemental iodine. However, a dessicator bag is very inefficient, so we were wondering if our viewers had any ideas.

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Science & Technology

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Uploader Comments (dbc616)

  • there are much easier ways to get iodine ( KI with HCL and H2O2 ), and the iodine you obtain from this method will most likely have impurities in it

  • @viclorwow yeah definately, but we wanted to show that the clock reaction actually produces iodine

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All Comments (11)

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  • witch craft ! burn his at stake

    (kidding ofcorse)

  • peroxodisulphate ions

  • Wow! Very clear explanations!

  • cool buffer

  • Solve the Iodine from the aqueous solution by shaking the iodine containing liquid with Dichloromethan/Chloroform/Tetr­achloromethane/Diethylether.

    The solvents should change their colours from colourless to a nice dark red.

  • I am glad to see you posting again and still doing good science.

    I have to agree with the other comments though that although this reaction does produce iodine isolating it might prove to be difficult, good luck though.

  • Get a solution of potassium iodide and add hydrogen peroxide to it, then add concentrated HCl to it to create a suspension of I2. Then filter the I2, then purify it by vaporization re-crystallization

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