Acetylene
| Acetylene | |
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Acetylene |
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Ethyne[1] |
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| Identifiers | |
| CAS number | 74-86-2  |
| ChemSpider | 6086 |
| UNII | OC7TV75O83 |
| UN nummer | 1001 (dissolved) 3138 (in mixtur wi ethylene an propylene) |
| KEGG | C01548 |
| ChEBI | CHEBI:27518 |
| ChEMBL | CHEMBL116336 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | 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 (Triple pynt at 1.27 atm) |
| Boilin pynt |
−84 °C, 189 K, -119 °F (Sublimation pynt at 1 atm) |
| Solubility in water | slightly soluble |
| Acidity (pKa) | 25 |
| Structure | |
| Molecular shape | Linear |
| Thermochemistry | |
| Std enthalpy o formation ΔfH |
+226.88 kJ/mol |
| Staundart molar entropy S |
201 J·mol−1·K−1 |
| Hazards | |
| NFPA 704 |
 4
1
3
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| Autoigneetion temperatur |
300 °C (572 °F) |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 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 thus is uisually haundled as a solution.[3] Pure acetylene is odorless, but commercial grades uisually hae a marked 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 of 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].
- ↑ Template:Housecroft3rd
Freemit airtins[eedit | eedit soorce]
- Acetylene at Chemistry Comes Alive!
- Acetylene, the Principles of Its Generation and Use at Project Gutenberg
- Movie explainin acetylene furmation frae calcium carbide an the explosive leemits furmin fire hazards
- Calcium Carbide & Acetylene at The Periodic Table o Videos (Varsity o Nottingham)
