Jmap science
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The Oxidation of Xylene To Benzene Or Benzoic Acid.
I could not get any toluene to make benzoic acid. Instead I got xylene. I was wondering if the oxidation of it using KMnO4 would form benzoic acid or
benzene. If it forms benzene that it would also make MnO2 and potassium formate, so would it form benzene or benzoic acid?
Jmap science: jmap2112@gmail.com
Age 13
Thanks for the help!
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bfesser
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Thread Moved
19-10-2013 at 10:43 |
Nicodem
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Exhaustive alkaline permanganate oxidation of the three xylenes would give the corresponding three benzenedicarboxylic acids. See the examples in the
literature.
Also UTFSE as this topic has been covered before, as for example in: http://www.sciencemadness.org/talk/viewthread.php?tid=8268
Welcome to the forum and make sure you read the forum guidelines.
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plante1999
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From the msds I read, "Xylenes" conatin mostly p-xylene and ethyl benzene, the later will convert to terephtalic acid on the conditions you stated,
the former is said to yield benzoic acid. Both acid would be in the form of the potassium salt.
EDIT, I inversed both, xylene yield teraphtalic acid.
[Edited on 19-10-2013 by plante1999]
I never asked for this.
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Jmap science
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Thanks guys, YOu think I could add sodium hydroxide in solution I could make benzene?
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Jmap science
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Would there be a trace of benzene?
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plante1999
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I don't think so. Not in these conditions.
I never asked for this.
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bfesser
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<strong>Jmap science</strong>, start by reading
these:
<strong><a href="viewthread.php?tid=19143">The ScienceMadness Guidelines</a></strong>
<strong><a href="viewthread.php?tid=8268">1,4-benzenedicarboxylic acid from xylene by oxidation</a></strong>
<strong><a href="viewthread.php?tid=325">Benzene synthesis</a></strong>
<strong><a href="viewthread.php?tid=2223">toluene --> benzaldehyde</a></strong>
And try the forum <img src="./images/xpblue/top_search.gif" /> <a href="search.php">Search</a> function.
If you still have questions, <em>after reading everything above</em>, you can ask them in the corresponding topics.
Welcome to ScienceMadness. 
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Nicodem
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Please learn to read the replies and the given references before you hit the reply button. It is the least you can do.
Quote: Originally posted by Nicodem  | | Exhaustive alkaline permanganate oxidation of the three xylenes would give the corresponding three benzenedicarboxylic acids. See the examples in the
literature. |
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Jmap science
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I did the experiment and I mixed for 2 weeks. I then filtered and added HCL and refluxed. There was no precipitate of Tetrephalic acid 
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bfesser
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One 'smilie' isn't enough for you? If you're looking for helpful replies, you're going to need to supply details, not a string of frowns.
P.S. Work on your spelling—'tetraphalic' doesn't mean what you think it does...
<img src="http://www.boingboing.net/filesroot/200902241402.jpg" width="400" />
...the word you're looking for is terephthalic.
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bismuthate
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I'm not suprised that you didn't obtain 4 dick-like objects from your experiment. Please provide more info I would like to know the details.
P.S. you said you mixed for weeks.... your arm must get tired.
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