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Topic: How do I make standard solution of iodine in aqueous potassium iodide?  (Read 10372 times)

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Offline mostlynotugly

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How do I make standard solution of iodine in aqueous potassium iodide?
« on: November 12, 2009, 11:09:42 AM »
How do I make standard solution of iodine in aqueous potassium iodide?

Any takers?  ???
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Offline Borek

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Re: How do I make standard solution of iodine in aqueous potassium iodide?
« Reply #1 on: November 12, 2009, 11:47:50 AM »
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Offline mostlynotugly

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Re: How do I make standard solution of iodine in aqueous potassium iodide?
« Reply #2 on: November 12, 2009, 12:24:43 PM »
Thanks, I titrated a DCPIP solution against Vitamin C, but there was no pink colour change it just went straight to blue? Is DCPIP unreliable?
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Offline Borek

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Re: How do I make standard solution of iodine in aqueous potassium iodide?
« Reply #3 on: November 12, 2009, 01:41:20 PM »
What pH? I seem to remember that it requires acidic solution to become pink, but I can be wrong.
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