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Pyrofosforsyra - Versionshistorik
2026-10-02T10:18:48Z
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https://wiki.guldforum.se/w/index.php?title=Pyrofosforsyra&diff=12935&oldid=prev
Dan Olsson den 3 mars 2013 kl. 11.58
2013-03-03T11:58:45Z
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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. 07.58</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l39">Rad 39:</td>
<td colspan="2" class="diff-lineno">Rad 39:</td></tr>
<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:Fosfater]]</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:Fosfater]]</div></td></tr>
<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:Syror]]</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:Syror]]</div></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;"></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;">[[ca:Àcid pirofosfòric]]</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;">[[de:Diphosphorsäure]]</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:Pyrophosphoric acid]]</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;">[[es:Ácido pirofosfórico]]</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;">[[fa:پیروفسفریک اسید]]</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;">[[fr:Acide pyrophosphorique]]</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;">[[it:Acido pirofosforico]]</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;">[[lt:Pirofosforo rūgštis]]</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;">[[nl:Pyrofosforzuur]]</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;">[[pt:Ácido pirofosfórico]]</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;">[[ro:Acid pirofosforic]]</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;">[[ru:Дифосфорная кислота]]</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;">[[vi:Axit pyrophosphoric]]</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=Pyrofosforsyra&diff=12181&oldid=prev
Dan Olsson: 1 version
2013-03-01T00:25:39Z
<p>1 version</p>
<p><b>Ny sida</b></p><div>{{Kemibox<br />
|Vardagligt namn = <br />
|Bild = Diphosphorsäure.svg<br />
|Bildtext = Strukturformel<br />
|Bildvertikal = ja<br />
|Bild2 = Pyrophosphoric-acid-3D-vdW.png<br />
|Bild2text = Molekylmodell<br />
|Systematiskt namn = Difosforsyra<br />
|Övriga namn = Pyrofosfatsyra<br />
|Kemisk formel = [[Väte|H]]<sub>4</sub>[[Fosfor|P]]<sub>2</sub>[[Syre|O]]<sub>7</sub> ''eller'' O([[Fosfat|H<sub>2</sub>PO<sub>3</sub>]])<sub>2</sub><br />
|Utseende = Färglösa, nålformiga kristaller<br />
|CAS-nummer = 2466-09-3<br />
|SMILES = OP(=O)(O)OP(=O)(O)O<br />
|Molmassa = 177,9751<br />
|Densitet = <br />
|Löslighet = löslig<br />
|LöslighetTemp = <br />
|Smältpunkt = 61<br />
|Smältextra = <br />
|Kokpunkt = <br />
|Kokextra = <br />
|Huvudfara = {{Farosymbol|C}}<br />
|NFPA704 = <br />
|LD50 = <br />
|}}<br />
<br />
'''Pyrofosforsyra''' eller '''difosforsyra''' är en [[oxosyra]] av [[fosfor]]. Dess [[salter]] och [[estrar]] kallas '''[[pyrofosfat]]er'''.<br />
<br />
Pyrofosforsyra framställs genom [[dehydrering]] av [[fosforsyra]] vid 200&nbsp;–&nbsp;300&nbsp;°C.<br />
:<math>\rm 2\ H_3PO_4\ \xrightarrow{\Delta}\ H_4P_2O_7 + H_2O</math><br />
<br />
Pyrofosforsyra återgår till fosforsyra när den löses i vatten.<br />
:<math>\rm H_4P_2O_7 + H_2O \rightarrow 2\ H_3PO_4</math><br />
<br />
== Se även ==<br />
* [[Pyrofosfat]]<br />
* [[Fosforsyra]]<br />
<br />
[[Kategori:Fosfater]]<br />
[[Kategori:Syror]]<br />
<br />
[[ca:Àcid pirofosfòric]]<br />
[[de:Diphosphorsäure]]<br />
[[en:Pyrophosphoric acid]]<br />
[[es:Ácido pirofosfórico]]<br />
[[fa:پیروفسفریک اسید]]<br />
[[fr:Acide pyrophosphorique]]<br />
[[it:Acido pirofosforico]]<br />
[[lt:Pirofosforo rūgštis]]<br />
[[nl:Pyrofosforzuur]]<br />
[[ja:二リン酸]]<br />
[[pt:Ácido pirofosfórico]]<br />
[[ro:Acid pirofosforic]]<br />
[[ru:Дифосфорная кислота]]<br />
[[sr:Пирофосфорна киселина]]<br />
[[vi:Axit pyrophosphoric]]<br />
[[zh:焦磷酸]]</div>
Dan Olsson