Acetylene
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Names | |
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IUPAC name
Acetylene
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Seestematic IUPAC name
Ethyne[1] | |
Identifiers | |
3D model (JSmol)
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ChEBI | |
ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.000.743 |
KEGG | |
UNII | |
UN nummer | 1001 (dissolved) 3138 (in mixtur wi ethylene an propylene) |
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Properties | |
C2H2 | |
Molar mass | 26.04 g·mol−1 |
Density | 1.097 g/L = 1.097 kg/m3 |
Meltin pynt | −80.8 °C, 192.4 K, −113.4 °F |
Bylin pynt | −84 °C (−119 °F; 189 K) |
slightly soluble | |
Acidity (pKa) | 25 |
Structur | |
Molecular shape | Linear |
Thermochemistry | |
Staundart molar entropy S |
201 J·mol−1·K−1 |
Std enthalpy o formation ΔfH |
+226.88 kJ/mol |
Hazards | |
NFPA 704 | |
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa). | |
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Infobox references | |
Acetylene (seestematic name: ethyne) is the chemical compoond wi the formula C2H2. It is a hydrocarbon an the simplest alkyne.[2] This colourless gas is widely uised as a fuel an a chemical biggin block. It is unstable in pure furm an sicweys is uisually haundled as a solution.[3] Pure acetylene is odorless, but commercial grades uisually hae a merked odor due tae impurities.[4]
As an alkyne, acetylene is unsaturatit acause its twa carbon atoms are bondit thegither in a triple bond. The carbon–carbon triple bond places aw fower atoms in the same straicht line, wi CCH bond angles o 180°. Syne acetylene is a linear symmetrical molecule, it possesses the D∞h pynt group.[5]
References[eedit | eedit soorce]
- ↑ Acyclic Hydrocarbons. Rule A-3. Unsaturated Compounds and Univalent Radicals, IUPAC Nomenclature of Organic Chemistry
- ↑ R.H.Petrucci, W.S.Harwood and F.G.Herring "General Chemistry", 8th edn.(Prentice-Hall 2002), p.1072
- ↑ Peter Pässler, Werner Hefner, Klaus Buckl, Helmut Meinass, Andreas Meiswinkel, Hans-Jürgen Wernicke, Günter Ebersberg, Richard Müller, Jürgen Bässler, Hartmut Behringer, Dieter Mayer "Acetylene" in Ullmann's Encyclopedia of Industrial Chemistry, 2008, Wiley-VCH, Weinheim. doi:10.1002/14356007.a01_097.pub3. Article Online Posting Date: 15 October 2008
- ↑ Compressed Gas Association (1995) [www.stoodyind.com/safety/msds/Acetylene.pdf Material Safety and Data Sheet – Acetylene].
- ↑ Housecroft, C. E.; Sharpe, A. G. (2008). Inorganic Chemistry (3rd ed.). Prentice Hall. pp. 94–95. ISBN 978-0131755536.