Iodine Test for Starch
Copyright 2017 Turtle Rock Scientific
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Iodine test is used to determine presence of starch. Here a dropper is used to add few drops of Lugol's solution into a beaker with an aqueous solution of corn starch (0.1% concentration). Lugol's solution (Lugol's iodine) is an aqueous solution of iodine and potassium iodide. Elemental iodine (I2) reacts with starch and produces dark-blue color.
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