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  2. Iodine–starch test - Wikipedia

    en.wikipedia.org/wiki/Iodinestarch_test

    A bottle of iodine solution used on apples to determine the correct harvest time. The chart shows the level of residual starch. 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 ...

  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. 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).

  5. 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 ...

  6. Redox titration - Wikipedia

    en.wikipedia.org/wiki/Redox_titration

    A redox titration [1] is a type of titration based on a redox reaction between the analyte and titrant. It may involve the use of a redox indicator and/or a potentiometer. A common example of a redox titration is the treatment of a solution of iodine with a reducing agent to produce iodide using a starch indicator to help detect the endpoint.

  7. 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 ...

  8. Staining - Wikipedia

    en.wikipedia.org/wiki/Staining

    Starch is a substance common to most plant cells and so a weak iodine solution will stain starch present in the cells. Iodine is one component in the staining technique known as Gram staining, used in microbiology. Used as a mordant in Gram's staining, iodine enhances the entrance of the dye through the pores present in the cell wall/membrane ...

  9. 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.