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November 01, 2025, 12:26:11 pm

Author Topic: Oxidation of ethanol  (Read 2125 times)  Share 

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akira88

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Oxidation of ethanol
« on: May 10, 2010, 09:50:17 pm »
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For the reaction
Ethanol + potassium permanganate, what are the products besides ethanoic acid?
I tried to look for an answer but couldn't find one :(
Any help would be great thanks!
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Nomvalt

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Re: Oxidation of ethanol
« Reply #1 on: May 10, 2010, 09:56:01 pm »
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I'm not too sure but I think I remember seeing somewhere that ethanol can be oxidised to ethanal and then ethanol. So ethanal would probably be the answer your looking for but I'm not sure.

akira88

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Re: Oxidation of ethanol
« Reply #2 on: May 10, 2010, 10:00:10 pm »
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Hmm oh aright, but I was wondering if the potassium in the potassium permanganate would react in the oxidation and produce a by product :P
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akira88

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Re: Oxidation of ethanol
« Reply #3 on: May 10, 2010, 10:06:05 pm »
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Anyone else got a clue?
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Nomvalt

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Re: Oxidation of ethanol
« Reply #4 on: May 10, 2010, 10:06:38 pm »
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Hmm oh aright, but I was wondering if the potassium in the potassium permanganate would react in the oxidation and produce a by product :P

actually isn't the permanganate supposed to be a catalyst? catalysts don't react in the reactions they catalysize they only speed it up.

fady_22

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Re: Oxidation of ethanol
« Reply #5 on: May 10, 2010, 10:08:54 pm »
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For the reaction
Ethanol + potassium permanganate, what are the products besides ethanoic acid?
I tried to look for an answer but couldn't find one :(
Any help would be great thanks!

Its a redox reaction: in this case, the manganese in the permanganate would be reduced to Mn2+. If dichromate is used, chromium is reduced to Cr3+.

If you write the equations out, you will also see that water is produced.
« Last Edit: May 10, 2010, 10:11:05 pm by fady_22 »
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fady_22

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Re: Oxidation of ethanol
« Reply #6 on: May 10, 2010, 10:11:34 pm »
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Hmm oh aright, but I was wondering if the potassium in the potassium permanganate would react in the oxidation and produce a by product :P

actually isn't the permanganate supposed to be a catalyst? catalysts don't react in the reactions they catalysize they only speed it up.

Permanganate is not a catalyst, but an oxidant.
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vexx

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Re: Oxidation of ethanol
« Reply #7 on: May 10, 2010, 10:15:21 pm »
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For the reaction
Ethanol + potassium permanganate, what are the products besides ethanoic acid?
I tried to look for an answer but couldn't find one :(
Any help would be great thanks!

Its a redox reaction: in this case, the manganese in the permanganate would be reduced to Mn2+. If dichromate is used, chromium is reduced to Cr3+.

If you write the equations out, you will also see that water is produced.

yeah i think this is right, if you used the chromium, then the products for the oxidation of ethanol at the end (completed oxidation) would be water and chromium ions.
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akira88

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Re: Oxidation of ethanol
« Reply #8 on: May 10, 2010, 10:38:07 pm »
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For the reaction
Ethanol + potassium permanganate, what are the products besides ethanoic acid?
I tried to look for an answer but couldn't find one :(
Any help would be great thanks!

Its a redox reaction: in this case, the manganese in the permanganate would be reduced to Mn2+. If dichromate is used, chromium is reduced to Cr3+.

If you write the equations out, you will also see that water is produced.

yeah i think this is right, if you used the chromium, then the products for the oxidation of ethanol at the end (completed oxidation) would be water and chromium ions.
So would the products then be ethanoic acid + manganese ions and water?
And yes I know that it is a catalyst but for the experiment I am using it is a reactant, sulfuric acid for the catalyst.

Permanganate is only a catalyst in the unbalanced equation that we see in our textbooks (for the chemical pathways) :P
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vexx

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Re: Oxidation of ethanol
« Reply #9 on: May 10, 2010, 10:41:06 pm »
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So would the products then be ethanoic acid + manganese ions and water?
And yes I know that it is a catalyst but for the experiment I am using it is a reactant, sulfuric acid for the catalyst.

Permanganate is only a catalyst in the unbalanced equation that we see in our textbooks (for the chemical pathways) :P

yes i think it would be that. you really don't need to know this though haha we didn't even cover this when doing organic reaction pathways/reaction mechanisms in first year chem :p
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akira88

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Re: Oxidation of ethanol
« Reply #10 on: May 10, 2010, 10:48:24 pm »
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So would the products then be ethanoic acid + manganese ions and water?
And yes I know that it is a catalyst but for the experiment I am using it is a reactant, sulfuric acid for the catalyst.

Permanganate is only a catalyst in the unbalanced equation that we see in our textbooks (for the chemical pathways) :P
Haha thanks for that! :P
yes i think it would be that. you really don't need to know this though haha we didn't even cover this when doing organic reaction pathways/reaction mechanisms in first year chem :p
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fady_22

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Re: Oxidation of ethanol
« Reply #11 on: May 10, 2010, 10:52:46 pm »
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So would the products then be ethanoic acid + manganese ions and water?
And yes I know that it is a catalyst but for the experiment I am using it is a reactant, sulfuric acid for the catalyst.

Permanganate is only a catalyst in the unbalanced equation that we see in our textbooks (for the chemical pathways) :P

yes i think it would be that. you really don't need to know this though haha we didn't even cover this when doing organic reaction pathways/reaction mechanisms in first year chem :p

I don't think permanganate OR sulfuric acid are catalysts in the reaction, but are both reactants-- in the redox reaction, hydrogen ions from the sulfuric acid form water and the permanganate is the oxidant.
The unbalanced equations with the reagents on the top of the arrow do not necessarily indicate a catalyst, but are just written that way for convenience-- imagine having to write out the whole redox reaction each time!
« Last Edit: May 10, 2010, 10:55:40 pm by fady_22 »
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Mao

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Re: Oxidation of ethanol
« Reply #12 on: May 10, 2010, 11:57:24 pm »
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I don't think permanganate OR sulfuric acid are catalysts in the reaction, but are both reactants-- in the redox reaction, hydrogen ions from the sulfuric acid form water and the permanganate is the oxidant.
The unbalanced equations with the reagents on the top of the arrow do not necessarily indicate a catalyst, but are just written that way for convenience-- imagine having to write out the whole redox reaction each time!

^^This.
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