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Topic: Diffrent iodine colour from iodate and iodide.  (Read 58 times)

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Offline anyoan1

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Diffrent iodine colour from iodate and iodide.
« on: Yesterday at 11:41:13 AM »
Why iodine from potassium iodate has diffrent colour than from iodide?

Iodate solution looks like mud, brown/dark beige.
Iodide solution looks goldish - yellow/brown, even strong violet and the begining.

Why is that?

Iodate solution made of: starch + acid + iodide
Iodide solution made of: starch + acid + peroxide.
« Last Edit: Yesterday at 12:02:16 PM by anyoan1 »
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Offline Borek

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Re: Diffrent iodine colour from iodate and iodide.
« Reply #1 on: Yesterday at 01:48:26 PM »
Hard to understand what you are doing, for example

Quote from: anyoan1 on Yesterday at 11:41:13 AM
Iodate solution made of: starch + acid + iodide

doesn't make much sense. You need to be more specific. Also:

Quote
Iodide solution made of: starch + acid + peroxide

What is source of iodine here?

Why do you add starch?
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