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  2. Iodine–starch test - Wikipedia

    en.wikipedia.org/wiki/Iodinestarch_test

    The cut surface of an apple stained with iodine, indicating a starch level of 4–5. The iodinestarch test is a chemical reaction that is used to test for the presence of starch or for iodine. The combination of starch and iodine is intensely blue-black. [1] [2] The interaction between starch and the triiodide anion (I − 3) is the basis ...

  3. Ripper Method - Wikipedia

    en.wikipedia.org/wiki/Ripper_Method

    The Ripper Method, developed in 1898, [1] is an analytical chemistry technique used to determine the total amount of sulfur dioxide (SO 2) in a solution.This technique uses iodine standard and a starch indicator to titrate the solution and determine the concentration of free SO 2.

  4. Iodine clock reaction - Wikipedia

    en.wikipedia.org/wiki/Iodine_clock_reaction

    The iodine clock reaction is a classical chemical clock demonstration experiment to display chemical kinetics in action; it was discovered by Hans Heinrich Landolt in 1886. [1] The iodine clock reaction exists in several variations, which each involve iodine species ( iodide ion, free iodine, or iodate ion) and redox reagents in the presence of ...

  5. Experimental: Create your own iodine clock reaction in 12 ...

    www.aol.com/news/experimental-create-own-iodine...

    This experiment is about much more than just watching Iodine solution turn royal blue from reddish brown. ... Corn Starch. Tincture of Iodine 2%. ... that demonstrates simple science experiments ...

  6. Briggs–Rauscher reaction - Wikipedia

    en.wikipedia.org/wiki/Briggs–Rauscher_reaction

    The initial aqueous solution contains hydrogen peroxide, an iodate, divalent manganese (Mn 2+) as catalyst, a strong chemically unreactive acid (sulphuric acid (H 2 SO 4) or perchloric acid (HClO 4) are good), and an organic compound with an active ("enolic") hydrogen atom attached to carbon which will slowly reduce free iodine (I 2) to iodide (I −).

  7. File:Iodine clock - persulphate.ogv - Wikipedia

    en.wikipedia.org/wiki/File:Iodine_clock_-_per...

    English: Video of iodine clock reaction. Potassium persulphate is used to oxidize iodide ions to iodine, in the presence of starch and a small amount of thiosulphate ions. When the thiosulphate is exhausted (by reaction with the iodine produced), the dark blue iodine-starch complex is formed.

  8. Iodometry - Wikipedia

    en.wikipedia.org/wiki/Iodometry

    The iodometric titration is a general method to determine the concentration of an oxidising agent in solution. In an iodometric titration, a starch solution is used as an indicator since it can absorb the I 2 that is released, visually indicating a positive iodine-starch test with a deep blue hue. This absorption will cause the solution to ...

  9. Minor test - Wikipedia

    en.wikipedia.org/wiki/Minor_test

    The Minor test (also known as Minor's test, the starchiodine test, and the iodinestarch test), described by Victor Minor in 1928, [1] is a qualitative medical test that is used to evaluate sudomotor function (perspiration or sweating).

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