https://wiki.guldforum.se/w/index.php?action=history&feed=atom&title=Oxidation
Oxidation - Versionshistorik
2026-05-08T04:09:50Z
Versionshistorik för denna sida på wikin
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https://wiki.guldforum.se/w/index.php?title=Oxidation&diff=10045&oldid=prev
Dan Olsson den 25 februari 2013 kl. 00.40
2013-02-25T00:40:00Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Äldre version</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Versionen från 24 februari 2013 kl. 20.40</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Kategori:Kemiska reaktioner]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Kategori:Kemiska reaktioner]]</div></td></tr>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[ca:Oxidació]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
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Dan Olsson
https://wiki.guldforum.se/w/index.php?title=Oxidation&diff=9289&oldid=prev
Dan Olsson: 1 version
2013-02-24T19:37:58Z
<p>1 version</p>
<p><b>Ny sida</b></p><div>[[Fil:Fall_in_Wyoming.jpg|miniatyr|330px|Oxiderad bil på ett fält. [[Rost]] är en form av oxidering.]]<br />
'''Oxidation''' eller '''oxidering''' (från franskans oxydation), är en kemisk reaktion vid vilken ett ämne avger en eller flera [[elektroner]]. En oxidation sker till exempel när zinkmetall bildar zinkjon, <math>\mathrm{Zn} \longrightarrow \mathrm{Zn}</math><sup>2+</sup><math>\ + \mathrm{2e}</math><sup>-</sup>. I denna reaktion oxideras zink. Elektronerna kan inte existera fritt utan måste tas upp av ett ämne som därvid [[reduceras]].<ref>oxidation. http://www.ne.se/lang/oxidation, Nationalencyklopedin, hämtad 2011-07-18.</ref> Vid snabbare förlopp och höga temperaturer brukar man tala om [[förbränning]].<br />
<br />
Enligt kemiskt språkbruk, är oxidation en reaktion där [[oxidationstal]]et går upp. Det behöver inte handla om en reaktion med syre. Oxidation sker när en atom lämnar ifrån sig elektroner och övergår till en positiv jon. Se vidare [[redoxreaktion]].<br />
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==Organisk kemi==<br />
[[Fil:Jones-Oxidation.png|miniatyr|330px|Oxidation av alkoholer; överst till en [[keton]], nederst till först en [[aldehyd]] och sedan till en [[karboxylsyra]].]]<br />
Inom [[organisk kemi]] avser oxidation ofta reaktioner med syre. [[Kolväte]]n kan oxideras i flera steg: <br />
#[[hydroxylering]], där [[alkoholer]] eller [[fenol]]er uppstår; <br />
#[[hydrogenering|dehydrogenering]] av alkoholens OH-grupp, där [[aldehyd]]er eller [[keton]]er uppstår, en redoxreaktion som inte kräver syre;<br />
#en aldehyd oxideras vidare till en [[karboxylsyra]].<br />
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==Referenser==<br />
<references/><br />
<br />
[[Kategori:Kemiska processer]]<br />
[[Kategori:Kemiska reaktioner]]<br />
<br />
[[ca:Oxidació]]<br />
[[cs:Oxidace]]<br />
[[de:Oxidation]]<br />
[[et:Oksüdatsioon]]<br />
[[es:Oxigenación]]<br />
[[hr:Oksidacija]]<br />
[[is:Oxun]]<br />
[[it:Ossidazione]]<br />
[[nl:Oxidatie]]<br />
[[ja:酸化]]<br />
[[pl:Utlenianie]]<br />
[[pt:Oxigenação]]<br />
[[simple:Oxidation]]<br />
[[fi:Hapetus]]<br />
[[tr:Yükseltgenme]]<br />
[[uk:Окиснення]]<br />
[[zh:氧化]]</div>
Dan Olsson