Question
Asked Sep 23, 2019
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While performing a starch test on several different cookie brands, four tests result in the typical black color of starch presence but the fifth gives a yellow-brown color. How might you interpret this result?

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Step 1

Given:

Starch test on several different cookie brands.

Four tests result in the typical black color.

Fifth gives a yellow-brown color.

Step 2

The iodine test is used to test for the presence of starch. Starch turns into intense “blue-black” color upon addition of aqueous solution of the triiodine anion, due to the formation of an ...

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Chemistry

General Chemistry

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