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| | Hi there. Allow me start by introducing the author, her title is Myrtle Cleary. He utilized to be unemployed but now he is a computer operator but his marketing by no means comes. Her family members lives in Minnesota. To gather cash is what his family and him appreciate.<br><br>my web site home std test kit ([http://checkmates.co.za/index.php?do=/profile-120229/info/ agree with this]) |
| This page provides supplementary chemical data on [[methane]].
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| == Material Safety Data Sheet == <!-- KEEP this header, it is linked to from the infobox on the main article page -->
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| The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet ([[Material safety data sheet|MSDS]]) for this chemical from a reliable source such as [http://avogadro.chem.iastate.edu/MSDS/methane.pdf Iowa State], and follow its directions.
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| == Structure and properties == <!-- KEEP this header, it is linked to from the infobox on the main article page -->
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| {| border="1" cellspacing="0" cellpadding="3" style="margin: 0 0 0 0.5em; background: #FFFFFF; border-collapse: collapse; border-color: #C0C090;"
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| ! {{chembox header}} | Structure and properties
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| | [[Index of refraction]], ''n''<sub>D</sub>
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| | ? <!-- Please omit if not applicable -->
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| |-
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| | [[Dielectric constant]], ε<sub>r</sub>
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| | 1.7 ε<sub>0</sub> at ? °C <!-- Please omit if not applicable -->
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| |-
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| | [[Bond strength (chemistry)|Bond strength]]
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| | ? <!-- Specify which bond. Please omit if not applicable -->
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| | [[Bond length]]
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| | .117 nm <!-- Specify which bond. Please omit if not applicable -->
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| | [[Bond angle]]
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| | 109.5 <!-- Specify which angle, e.g. Cl-P-O. Please omit if not applicable -->
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| | [[Magnetic susceptibility]]
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| | -17.4 * 10<sup>-6</sup> cm<sup>3</sup>/mol <!-- Please omit if not applicable -->
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| |}
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| == Thermodynamic properties == <!-- KEEP this header, it is linked to from the infobox on the main article page -->
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| ! {{chembox header}} | Phase behavior
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| | [[Triple point]]
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| | 90.67 K (−182.48 °C), 0.117 bar
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| | [[Critical point (thermodynamics)|Critical point]]
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| | 190.6 K (−82.6 °C), 46 bar
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| | [[Standard enthalpy change of fusion|Std enthalpy change<br/>of fusion]], Δ<sub>fus</sub>''H''<sup><s>o</s></sup>
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| | 1.1 kJ/mol
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| |-
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| | [[Standard entropy change of fusion|Std entropy change<br/>of fusion]], Δ<sub>fus</sub>''S''<sup><s>o</s></sup>
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| | ? J/(mol·K)
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| | [[Standard enthalpy change of vaporization|Std enthalpy change<br/>of vaporization]], Δ<sub>vap</sub>''H''<sup><s>o</s></sup>
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| | 8.17 kJ/mol
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| | [[Standard entropy change of vaporization|Std entropy change<br/>of vaporization]], Δ<sub>vap</sub>''S''<sup><s>o</s></sup>
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| | ? J/(mol·K)
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| ! {{chembox header}} | Solid properties
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| | [[Standard enthalpy change of formation|Std enthalpy change<br/>of formation]], Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>solid</sub>
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| | -73.4 kJ/mol<ref>{{cite web|title=Methane|url=http://webbook.nist.gov/cgi/cbook.cgi?ID=C74828&Mask=1|publisher=National Institute of Standards and technology|accessdate=21 October 2013}}</ref>
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| | [[Standard molar entropy]],<br/>''S''<sup><s>o</s></sup><sub>solid</sub>
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| | ? J/(mol K)
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| | [[Heat capacity]], ''c<sub>p</sub>''
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| | ? J/(mol K)
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| ! {{chembox header}} | Liquid properties
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| | [[Standard enthalpy change of formation|Std enthalpy change<br/>of formation]], Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>liquid</sub>
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| | ? kJ/mol
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| | [[Standard molar entropy]],<br/>''S''<sup><s>o</s></sup><sub>liquid</sub>
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| | ? J/(mol K)
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| | [[Heat capacity]], ''c<sub>p</sub>''
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| | 52.93 J/(mol K)
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| ! {{chembox header}} | Gas properties
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| | [[Standard enthalpy change of formation|Std enthalpy change<br/>of formation]], Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>gas</sub>
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| | −74.87 kJ/mol
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| | [[Standard molar entropy]],<br/>''S''<sup><s>o</s></sup><sub>gas</sub>
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| | 186.61 J/(mol K)
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| | [[Enthalpy of combustion]] Δ<sub>c</sub>''H''<sup><s>o</s></sup>
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| | –882.0 k[[joule|J]]/[[mole (unit)|mol]]
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| | [[Heat capacity]], ''c<sub>p</sub>''
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| | 35.69 J/(mol K)
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| | [[van der Waals equation|van der Waals' constants]]<ref name="lange1522">''Lange's Handbook of Chemistry'', 10th ed, pp 1522-1524</ref>
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| | a = 228.29 L<sup>2</sup> kPa/mol<sup>2</sup><br> b = 0.04278 liter per mole
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| ==Vapor pressure of liquid==
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| | {{chembox header}} | '''P in mm Hg''' || 1 || 10 || 40 || 100 || 400 || 760 || 1520 || 3800 || 7600 || 15200 || 30400 || 45600
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| | {{chembox header}} | '''T in °C''' || –205.9<sub>(s)</sub> || –195.5<sub>(s)</sub> || –187.7<sub>(s)</sub> || –181.4 || –168.8 || –161.5 || –152.3 || –138.3 || –124.8 || –108.5 || –86.3 || —
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| Table data obtained from ''CRC Handbook of Chemistry and Physics'' 44th ed. Annotation "(s)" indicates equilibrium temperature of vapor over solid. Otherwise temperature is equilibrium of vapor over liquid. Note that these are all negative temperature values.
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| [[Image:LogMethaneVaporPressure.png|thumb|432px|left|'''log<sub>10</sub> of methane vapor pressure vs. temperature.''' Uses formula: <math>\scriptstyle \log_{10} P_{mmHg} = 6.61184 - \frac {389.93} {266.00 + T} </math> given in ''Lange's Handbook of Chemistry'', 10th ed. Note that formula loses accuracy near T<sub>crit</sub> = −82.6°C]]{{Clear}}
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| == Spectral data == <!-- KEEP this header, it is linked to from the infobox on the main article page -->
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| [[Image:Methane-ir.png|thumb|right|450px|Methane infrared spectrum]]
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| ! {{chembox header}} | [[UV/VIS spectroscopy|UV-Vis]]
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| | [[Lambda-max|λ<sub>max</sub>]]
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| | ? [[Nanometre|nm]]
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| | [[molar absorptivity|Extinction coefficient]], ε
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| | ?
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| ! {{chembox header}} | [[Infrared|IR]]
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| | Major absorption bands
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| | ~3020 cm<sup>−1</sup>
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| | ~1300
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| ! {{chembox header}} | [[NMR Spectroscopy|NMR]]
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| | [[Proton NMR]] <!-- Link to image of spectrum -->
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| | [[Carbon-13 NMR]] <!-- Link to image of spectrum -->
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| | Other NMR data <!-- Insert special data e.g. <sup>19</sup>F chem. shifts, omit if not used -->
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| ! {{chembox header}} | [[Mass Spectrometry|MS]]
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| | Masses of <br>main fragments
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| | <!-- Give list of major fragments -->
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| |}
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| ==References==
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| <references/>
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| <!-- [http://webbook.nist.gov/chemistry/ NIST Standard Reference Database] -->
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| Except where noted otherwise, data relate to [[standard ambient temperature and pressure]].
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| [[wikipedia:Chemical infobox|Disclaimer]] applies.
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| {{DEFAULTSORT:Methane (Data Page)}}
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| [[Category:Chemical data pages]]
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| [[Category:Methane]]
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Hi there. Allow me start by introducing the author, her title is Myrtle Cleary. He utilized to be unemployed but now he is a computer operator but his marketing by no means comes. Her family members lives in Minnesota. To gather cash is what his family and him appreciate.
my web site home std test kit (agree with this)