https://wiki.guldforum.se/w/index.php?action=history&feed=atom&title=Selentrioxid
Selentrioxid - Versionshistorik
2026-11-07T03:01:52Z
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https://wiki.guldforum.se/w/index.php?title=Selentrioxid&diff=13097&oldid=prev
Dan Olsson den 3 mars 2013 kl. 17.22
2013-03-03T17:22:54Z
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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 3 mars 2013 kl. 12.22</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:Selenföreningar]]</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:Selenföreningar]]</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;">[[ar:ثلاثي أكسيد السيلينيوم]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<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;">[[cs:Oxid selenový]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<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;">[[en:Selenium trioxide]]</del></div></td><td colspan="2" class="diff-side-added"></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;">[[nl:Seleentrioxide]]</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=Selentrioxid&diff=9707&oldid=prev
Dan Olsson: 1 version
2013-02-24T23:38:36Z
<p>1 version</p>
<p><b>Ny sida</b></p><div>{{Kemibox<br />
|Vardagligt namn = <br />
|Bild = Selenium trioxide.svg<br />
|Bildtext = Strukturformel<br />
|Bildbredd = <br />
|Bild2 = Selenium-trioxide-3D-spacefill.png<br />
|Bild2text = <br />
|Systematiskt namn = Selen(VI)trioxid<br />
|Övriga namn = <br />
|Kemisk formel = [[Selen|Se]][[Syre|O]]<sub>3</sub><br />
|Utseende = Gulvita kristaller<br />
|CAS-nummer = 13768-86-0<br />
|SMILES = O=[Se](=O)=O<br />
|Molmassa = 126,958<br />
|Densitet = 3,44<br />
|Löslighet = löslig<br />
|LöslighetTemp = <br />
|Smältpunkt = 118,35<br />
|Smältextra = <br />
|Kokpunkt = 180<br />
|Kokextra = sönderfaller<br />
|Huvudfara = {{Farosymbol|T}}{{Farosymbol|N}}<br />
|NFPA704 = <br />
|LD50 = <br />
|}}<br />
<br />
'''Selentrioxid''' är en [[kemisk förening]] mellan [[selen]] och [[syre]] med [[kemisk formel|formeln]] SeO<sub>3</sub>.<br />
<br />
==Egenskaper==<br />
Selentrioxid är [[Termodynamisk jämvikt|termodynamiskt instabil]] och sönderfaller gärna till [[selendioxid]] och [[syrgas]].<br />
:<math>\rm 2\ SeO_3 \rightarrow 2\ SeO_2 + O_2</math><br />
<br />
I [[gasform]] är Selentrioxid [[monomer]]iskt, men i fast form bildar det [[oligomer|tetramer]]en Se<sub>4</sub>O<sub>12</sub>.<br />
<br />
==Framställning==<br />
Selentrioxid kan framställas genom att reagera [[kaliumselenat]] (K<sub>2</sub>SeO<sub>4</sub>) med [[svaveltrioxid]] (SO<sub>3</sub>).<br />
:<math>\rm K_2SeO_4 + SO_3 \rightarrow SeO_3 + K_2SO_4</math><br />
<br />
==Användning==<br />
Selentrioxid används vid tillverkning av [[solcell]]er.<br />
<br />
==Se även==<br />
*[[Selendioxid]]<br />
*[[Svaveltrioxid]]<br />
*[[Kromtrioxid]]<br />
<br />
==Källor==<br />
*[http://www.inchem.org/documents/icsc/icsc/eics0949.htm International Chemical Safety Card]<br />
<br />
{{enwp|url=http://en.wikipedia.org/w/index.php?title=Selenium_trioxide&oldid=317358580|artikel=Selenium trioxide}}<br />
{{nlwp|url=http://nl.wikipedia.org/w/index.php?title=Seleentrioxide&oldid=18441728|artikel=Seleentrioxide}}<br />
<br />
[[Kategori:Selenföreningar]]<br />
[[Kategori:Oxider]]<br />
<br />
[[ar:ثلاثي أكسيد السيلينيوم]]<br />
[[cs:Oxid selenový]]<br />
[[en:Selenium trioxide]]<br />
[[fa:تریاکسید سلنیوم]]<br />
[[it:Triossido di selenio]]<br />
[[nl:Seleentrioxide]]<br />
[[ja:三酸化セレン]]<br />
[[pt:Trióxido de selênio]]<br />
[[ru:Триоксид селена]]<br />
[[simple:Selenium trioxide]]<br />
[[zh:三氧化硒]]</div>
Dan Olsson