Methane

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Methane
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Beilstein Reference 1718732
ChEBI
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Gmelin Reference 59
KEGG
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RTECS number PA1490000
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Template:Chembox Elements/molecular formula
Molar mass Template:Chem molar mass
Appearance Colorless gas
Odor Odorless
Density
  • 0.657 g·L−1 (gas, 25 °C, 1 atm)
  • 0.717 g·L−1 (gas, 0 °C, 1 atm)
  • 422.62 g·L−1 (liquid, −162 °C)[2]
Melting point Template:Chembox CalcTemperatures
Boiling point Template:Chembox CalcTemperatures
Solubility Soluble in ethanol, diethyl ether, benzene, toluene, methanol, acetone and insoluble in water
log P 1.09
kH 14 nmol·Pa−1·kg−1
Tetrahedron
0 D
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−74.87 kJ·mol−1
Std enthalpy of
combustion
ΔcHo298
−891.1 to −890.3 kJ·mol−1
Standard molar
entropy
So298
186.25 J·(K·mol)−1
Specific heat capacity, C 35.69 J·(K·mol)−1
Hazards
NFPA 704
4
2
0
 
Explosive limits 4.4–17%
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Methane is an organic compound with the chemical formula CHScript error: No such module "Su".. It is an alkane with one carbon atom. It is often found as the main part of natural gas. Methane is a greenhouse gas[4][5] 23 times more effective than carbon dioxide. It is also less stable and slowly oxidates by oxygen to carbon dioxide and water.

Uses

Methane is used in gas taps in places such as kitchens, chemistry classrooms, laboratories, etc. as it burns very easily because of its simple molecular structure.

Molecular structure

Methane's molecular structure is very simple. It is a single carbon atom surrounded by four hydrogen atoms.

Production

Methane can be made by many chemical ways, but usually is found in natural gas and is obtained by fractional distillation, after it has become liquid.

References

  1. 1.0 1.1 Template:Cite book
  2. "Gas Encyclopedia". Retrieved November 7, 2013.
  3. NOAA Office of Response and Restoration, US GOV. "METHANE". noaa.gov.
  4. White House Unveils Plans to Cut Methane Emissions March 28, 2014 New York Times
  5. Brad Plumer (December 12, 2016). "Methane levels in the atmosphere are now rising at their fastest pace in decades; It's a big problem for climate change". Vox.com. Retrieved 18 December 2016.