July 03, 2020, 12:44:23 PM
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Topic: Determining the Oxidation state of Manganese(III) acetylacetonate  (Read 196 times)

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Offline tenki

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Hello Guys,
im about to synthesize Manganese(III) acetylacetonate and afterwards i have to determine the oxidation state by performing a redox titration. To do this i take 200mg of my synthesized product and add 1.00 g KI, 50 mL Water, 5 mL half diluted HCl and a little bit of NaHCO2. I let it sit for while and mix it up a little from time to time. The seperated Iodine will be titrated with a Na2S2O3-solution. The oxidation state has to be determinated by the used Na2S2O3-solution, but im not quite sure how to do it, because i have problems with the Reaction equation.
I´m happy with every help i get :)

Offline Borek

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Re: Determining the Oxidation state of Manganese(III) acetylacetonate
« Reply #1 on: June 16, 2020, 02:54:43 AM »
S2O32- is oxidized by iodine to S4O62-.
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Offline tenki

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Re: Determining the Oxidation state of Manganese(III) acetylacetonate
« Reply #2 on: June 16, 2020, 10:52:01 AM »
But how does the iodine get seperated by the manganese-complex? Understandig that reaction equation is crucial find out the oxidation state by titration.

Offline AWK

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Re: Determining the Oxidation state of Manganese(III) acetylacetonate
« Reply #3 on: June 16, 2020, 10:57:45 AM »
Iodine can be extracted by various solvents.
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Offline tenki

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Re: Determining the Oxidation state of Manganese(III) acetylacetonate
« Reply #4 on: June 16, 2020, 11:00:55 AM »
But i dont quite understand where the correlation with the Manganes(III)acetylacetonate and its oxidation state comes from.

Offline AWK

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Re: Determining the Oxidation state of Manganese(III) acetylacetonate
« Reply #5 on: June 16, 2020, 01:47:13 PM »
You did the synthesis according to some procedure. A good procedure not only gives a method of synthesis, but also a method of checking whether the correct compound has actually been obtained, or in the text of the procedure itself, or in the references.
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