Hermite interpolation: Difference between revisions

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Error: It cannot be "plus one" because then error from normal interpolation (without derivatives) would not be special case of it.
 
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{{chembox
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| Watchedfields = changed
| verifiedrevid = 431911872
|  Name = Ammonium hydrosulfide
|  ImageFileL1 = Ammonium-2D.svg
|  ImageFileR1 = Hydrogen sulfide ion.svg
|  IUPACName = ammonium hydrosulfide
|  OtherNames = ammonium bisulfide<br />ammonium hydrogen sulfide
| Section1 = {{Chembox Identifiers
|  ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 23805
| InChI = 1/H3N.H2S/h1H3;1H2
| InChIKey = HIVLDXAAFGCOFU-UHFFFAOYAU
| SMILES = [SH-].[NH4+]
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/H3N.H2S/h1H3;1H2
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = HIVLDXAAFGCOFU-UHFFFAOYSA-N
| CASNo_Ref = {{cascite|correct|??}}
| CASNo = 12124-99-1
| RTECS = BS4900000
  }}
| Section2 = {{Chembox Properties
|  Formula = H<sub>5</sub>NS
|  MolarMass = 51.111 g/mol
|  Appearance = Yellow-orange fuming liquid.
|  Density = 1.17 g/cm<sup>3</sup><ref>Pradyot Patnaik. ''Handbook of Inorganic Chemicals''. McGraw-Hill, 2002, ISBN 0-07-049439-8</ref>
|  Solubility = Miscible in all proportions
|  SolubleOther = soluble in [[alcohol]], liquid [[ammonia]], liquid [[hydrogen sulfide]]; insoluble in [[benzene]], [[hexane]] and [[ether]]
|  MeltingPt =
|  BoilingPtC = 56.6
|  pKb =
|  RefractIndex = 1.74
  }}
| Section7 = {{Chembox Hazards
|  ExternalMSDS =
|  MainHazards = Toxic
|  NFPA-H = 3
|  NFPA-F = 3
|  NFPA-R =
|  FlashPt =
|  RPhrases = {{R11}}, {{R23}}, {{R24}}, {{R25}}.
|  SPhrases =
|  LD50 = 168 mg/kg (rat, oral)<ref name=GESTIS>{{GESTIS | CAS = 12124-99-1 | ZVG = 492163 | Name = ammonium hydrosulfide | Date = October 22, 2010}}</ref>
  }}
| Section8 = {{Chembox Related
|  OtherAnions = [[Ammonium sulfate]]
|  OtherCations = [[Sodium hydrosulfide]]
  }}
}}
 
'''Ammonium hydrosulfide''' is the [[chemical compound]] with the [[Chemical formula|formula]] (NH<sub>4</sub>)SH. It is the [[salt]] derived from the [[ammonium]] [[cation]] and the [[hydrosulfide]] [[anion]]. The salt exists as colourless, water soluble, [[mica]]ceous crystals. The compound is encountered mainly as a solution, not as the solid. It is generated by mixing [[hydrogen sulfide]] and [[ammonia]].
 
==Preparation==
Solutions of ammonium hydrosulfide can be prepared by passing [[hydrogen sulfide]] gas through concentrated [[ammonia]] solution.<ref>{{cite journal | author = Goodman, J. T.; Rauchfuss, T. B., | title = Tetraethylammonium-tetrathioperrhenate [Et<sub>4</sub>N][ReS<sub>4</sub>] | journal = [[Inorganic Syntheses]] | year = 2002 | volume = 33 | pages = 107–110}}</ref> According to a detailed 1895 report, hydrogen sulfide reacts with concentrated aqueous ammonia solution at room temperature to give (NH<sub>4</sub>)<sub>2</sub>S·2NH<sub>4</sub>HS. When this species is cooled to 0&nbsp;°C and treated with additional hydrogen sulfide, one obtains (NH<sub>4</sub>)<sub>2</sub>S·12NH<sub>4</sub>HS.<ref>{{cite journal | author = W. P. Bloxam | title = The Sulphides and Polysulphides of Ammonium | journal = [[J. Chem. Soc., Trans.]] | year = 1895 | volume = 67 | pages = 283 | doi = 10.1039/CT8956700277}}</ref> An ice-cold solution of this substance kept at 0&nbsp;°C and having hydrogen sulfide continually passed through it gives the hydrosulfide.
 
The common "[[stink bomb]]" consists of an aqueous solution of ammonium sulfide. The mixture easily converts to [[ammonia]] and [[hydrogen sulfide]] gases. This conversion illustrates the ease of the following equilibrium:
: (NH<sub>4</sub>)SH<math>\overrightarrow{\leftarrow}</math> NH<sub>3</sub> + H<sub>2</sub>S
Both ammonia and hydrogen sulfide have a powerfully unpleasant smell.
 
==References==
{{reflist}}
 
[[Category:Ammonium compounds]]
[[Category:Sulfides]]
 
<!-- this link is to ammoniumsulfide, not the hydrogensulfide [[de:Ammoniumsulfid]] -->
<!-- this link is to ammoniumsulfide, not the hydrogensulfide [[fi:Ammoniumsulfidi]] -->

Latest revision as of 22:07, 11 November 2014

Greetings. The writer's name is Phebe and she feels comfortable when individuals use the full title. He used to be unemployed but now he is a meter reader. South Dakota is where me and my husband live and my family members loves it. What I love performing is to gather badges but I've been using on new things recently.

My page: http://www.Earth210.com/210/partscustom/1575866