Biology, asked by virginiachweya, 1 year ago

Explain the concept of blue black color of iodine solution being observed in starch

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Answered by hemant6277
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The iodine test is used to test for the presence of starch. Starch turns into an intense "blue-black" colour upon addition of aqueous solutions of the triiodide anion, due to the formation of an intermolecular charge-transfer complex. ... This interaction between starch and triiodide is also the basis for iodometry.

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