azg
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Oxidising alcohols into carboxylic acid with KMnO4
I read on WikiPedia
http://en.wikipedia.org/wiki/Oxidation_of_primary_alcohols_t...
that Potassium Permanganate effectively oxidizes alcohols, di-ols, etc. It also said the reaction is carried out in a suspension or solution of KOH or
NaOH. But the product will react with the base. It said that the reaction can be carried in neutral conditions at a cost of long reaction time.
Also, I read that MnO2 precipitate is formed.
So, do you guys know how much time the reaction will require without strong base ? Is it easy to separate the MnO2 precipitate via
decantation ?
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Chemosynthesis
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Since no one knows what your reaction is, specifically, the answer is "no."
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azg
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KMnO4 is stirred in alcohols to get respective carboxylic acids. It oxidizes alcohols to get carboxylic acids. Do you know how much time
will this take ?
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Chemosynthesis
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Quote: Originally posted by azg  |
KMnO4 is stirred in alcohols to get respective carboxylic acids. It oxidizes alcohols to get carboxylic acids. Do you know how much time
will this take ? |
That's not a specific reaction with actual reagents. That's a generalized example, so again... no. It's reactant-specific.
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DraconicAcid
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| Quote: Originally posted by Chemosynthesis | | Quote: Originally posted by azg |
KMnO4 is stirred in alcohols to get respective carboxylic acids. It oxidizes alcohols to get carboxylic acids. Do you know how much time
will this take ? |
That's not a specific reaction with actual reagents. That's a generalized example, so again... no. It's reactant-specific. |
And temperature dependent. And concentration dependent. And solvent dependent. And, and, and....
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Chemosynthesis
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Exactly.
azg, please post with actual reaction conditions or reagents next time, and if not citing peer-reviewed chemical literature, use the "Beginnings"
section.
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Nicodem
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Thread Moved
26-4-2014 at 22:28 |
azg
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25% ethanol in water at room temparature ?
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Chemosynthesis
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It appears your answer is in this article.
J. Am. Chem. SOC. 41, 1267 (1919). pp 1267–1285
You may also consider using acidic conditions if possible.
"The oxidation of ethanol by permanganate has been found to obey the rate law v=k[MeCHO][MnO 4 −][H+]"
Reaction Kinetics and Catalysis Letters
1989, Volume 38, Issue 2, pp 313-318
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