Sulfuro de hidróxeno: Diferenzas entre revisións

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Liña 1:
{{Chembox
[[Ficheiro:Hydrogen-sulfide-2D-dimensions.svg|miniatura|150px|Xeometría do sulfuro de hidróxeno.]]
| Verifiedfields = changed
[[Ficheiro:Hydrogen-sulfide-3D-vdW.png|miniatura|150px|Estrutura tridimensional]].
| verifiedrevid = 477313464
| ImageFile1= Hydrogen-sulfide-2D-dimensions.svg
| ImageFile_Ref1 =
| ImageSize1 = 170
| ImageName1 = Fórmula esquelética do sulfuro de hidróxeno en 2D
| ImageFileL1 = Hydrogen-sulfide-3D-balls.png
| Image NameL1 = Modelo de bólas e paus do sulfuro de hidróxeno
| ImageFileR1 = Hydrogen-sulfide-3D-vdW.png
| ImageFileR1_Ref =
| ImageNameR1 = Modelo de recheo de espazos do sulfuro de hidróxeno
| SystematicName = Sulfuro de hidróxeno<ref>{{cite web|title = Hydrogen Sulfide - PubChem Public Chemical Database|url = http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=402&loc=ec_rcs|work = The PubChem Project|location = USA|publisher = National Center for Biotechnology Information}}</ref>
| OtherNames = ácido sulfhídrico<br />
Dihidróxeno monosulfuro<br />
Dihidróxeno sulfuro<br />
gas das cloacas<br />
Sulfano<br />
Hidróxeno sulfurado<br />
Hidruro de xofre
| Section1 = {{Chembox Identifiers
| CASNo = 7783-06-4
| CASNo_Ref =
| PubChem = 402
| PubChem_Ref =
| ChemSpiderID = 391
| ChemSpiderID_Ref =
| UNII = YY9FVM7NSN
| UNII_Ref =
| EINECS = 231-977-3
| UNNumber = 1053
| KEGG = C00283
| KEGG_Ref =
| MeSHName = Hydrogen+sulfide
| ChEBI_Ref =
| ChEBI = 16136
| ChEMBL = 1200739
| ChEMBL_Ref =
| RTECS = MX1225000
| Beilstein = 3535004
| Gmelin = 303
| 3DMet = B01206
| SMILES = S
| StdInChI = 1S/H2S/h1H2
| StdInChI_Ref =
| InChI = 1/H2S/h1H2
| StdInChIKey = RWSOTUBLDIXVET-UHFFFAOYSA-N
| StdInChIKey_Ref =
| InChIKey = RWSOTUBLDIXVET-UHFFFAOYAJ
}}
| Section2 = {{Chembox Properties
| H = 2
| S = 1
| ExactMass = 33,987720754 g/mol
| Appearance = Gs incoloro
| Odor = a ovos podres
| Density = 1,363 g dm<sup>−3</sup>
| MeltingPtC = -82
| BoilingPtC = -60
| Solubility = 4 g dm<sup>−3</sup> (a 20 °C)
| VaporPressure = 1740 kPa (a 21 °C)
| pKa = 7,0<ref>Perrin, D.D., ''Ionisation Constants of Inorganic Acids and Bases in Aqueous Solution'', 2nd Ed., Pergamon Press: Oxford, '''1982'''.</ref><ref>Bruckenstein, S.; Kolthoff, I.M., in Kolthoff, I.M.; Elving, P.J. ''Treatise on Analytical Chemistry'', Vol. 1, pt. 1; Wiley, NY, '''1959''', pp. 432-433.</ref>
| pKb = 6,95
| RefractIndex = 1,000644 (0 °C)<ref>Pradyot Patnaik. ''Handbook of Inorganic Chemicals''. McGraw-Hill, 2002, ISBN 0-07-049439-8</ref>
}}
| Section3 = {{Chembox Structure
| MolShape = curvada
| Dipole = 0,97 D
}}
| Section4 = {{Chembox Thermochemistry
| DeltaHf = −21&nbsp;kJ·mol<sup>−1</sup><ref name=b1>{{cite book| author = Zumdahl, Steven S.|title =Chemical Principles 6th Ed.| publisher = Houghton Mifflin Company| year = 2009| isbn = 0-618-94690-X|page=A23}}</ref>
| Entropy = 206&nbsp;J·mol<sup>−1</sup>·K<sup>−1</sup><ref name=b1/>
| HeatCapacity = 1,003 J K<sup>−1</sup> g<sup>−1</sup>
}}
| Section5 = {{Chembox Hazards
| MSDS = [http://msds.chem.ox.ac.uk/HY/hydrogen_sulfide.html External MSDS]
| EUIndex = 016-001-00-4
| EUClass = {{Hazchem F+}} {{Hazchem T+}} {{Hazchem N}}
| RPhrases = {{R12}}, {{R26}}, {{R50}}
| SPhrases = {{S1/2}}, {{S9}}, {{S16}}, {{S36}}, {{S38}}, {{S45}}, {{S61}}
| NFPA-H = 4
| NFPA-F = 4
| NFPA-R = 0
| AutoignitionC = 232
| FlashPt = -82,4 °C<ref>[http://www.npi.gov.au/substances/hydrogen-sulfide/index.html Hydrogen sulfide: Overview], National Pollutant Inventory, Australia</ref>
| ExploLimits = 4,3–46%
}}
| Section6 = {{Chembox Related
| Function = hidróxeno calcoxénidos
| OtherFunctn = auga<br />[[selenuro de hidróxeno]]<br />[[telururo de hidróxeno]]<br />[[polonuro de hidróxeno]]<br />[[Disulfuro de hidróxeno]]<br/>[[Sulfanyl]]
| OtherCpds = [[Fosfina]]
}}
}}
 
O '''sulfuro de hidrógeno''' é un [[gas]], máis denso que o aire, de fórmula H<sub><small>2</small></sub>S, incoloro, inflamábel, tóxico, odorífero (o seu olor é o de materia orgánica en descomposición, como de [[ovo (alimento)|ovos]] podres).