Answer to Question #246963 in Organic Chemistry for Mohamed

Question #246963
Why does the Lugol’s test (iodine test) give dark blue color of amylase- starch
mixture after boiling of this mixture?
1
Expert's answer
2021-10-05T23:57:31-0400

Once amylose is added, it forms another CT complex, Here, the amylose acts as a charge donor and the polyiodide as an acceptor. This complex absorbs light of a different wavelength than polyiodide, and the color turns dark blue.


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