Alkanes: Difference between revisions
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Alkanes are the simplest class of [[Hydrocarbons|Hydrocarbons]]. They contain only single bonds between molecules. They range in size from [[Methane|Methane]], the smallest alkane with a chemical formula of CH<sub>4, </sub>to long chain molecules which branch and may form different [[Sterioisomers|isomers]]<span class="gmw_">. The general formula for alkanes <span class="gm_ gm_bf181a43-b202-a01a-f0e0-e35fd3ce3002 gm-spell">is</span> C</span><sub>n</sub>H<sub>2n+2 </sub>and this may be used to predict the formula of any alkane<ref>http://www.chemguide.co.uk/organicprops/alkanes/background.html#top</ref>.The formula shows that the number of hydrogens is double the number of carbons with another two added on.<br> | Alkanes are the simplest class of [[Hydrocarbons|Hydrocarbons]]. They contain only single bonds between molecules; this means that they are saturated molecules due to each carbon-carbon bond being single. They range in size from [[Methane|Methane]], the smallest alkane with a chemical formula of CH<sub>4, </sub>to long chain [[Molecules|molecules]] which branch and may form different [[Sterioisomers|isomers]]<span class="gmw_">. The general formula for alkanes <span class="gm_ gm_bf181a43-b202-a01a-f0e0-e35fd3ce3002 gm-spell">is</span> C</span><sub>n</sub>H<sub>2n+2 </sub>and this may be used to predict the formula of any alkane<ref>http://www.chemguide.co.uk/organicprops/alkanes/background.html#top</ref>.The formula shows that the number of [[Hydrogen|hydrogens]] is double the number of [[Carbon|carbons]] with another two added on. <br> | ||
The formulae of the first six alkanes are displayed in the Table 1 below: | |||
'''Table 1: Alkane Formulae''' | |||
{| width="200" border="2" cellpadding="1" cellspacing="1" | |||
|- | |||
! scope="col" | NAME | |||
! scope="col" | FORMULA | |||
|- | |||
! scope="row" | Methane | |||
| CH<sub>4</sub><sub></sub> | |||
|- | |||
! scope="row" | Ethane | |||
| C<sub>2</sub>H<sub>6</sub><sub></sub> | |||
|- | |||
! scope="row" | Propane | |||
| C<sub>3</sub>H<sub>8</sub> | |||
|- | |||
! scope="row" | Butane | |||
| C<sub>4</sub>H<sub>10</sub> | |||
|- | |||
! scope="row" | Pentane | |||
| C<sub>5</sub>H<sub>12</sub> | |||
|- | |||
! scope="row" | Hexane | |||
| C<sub>6</sub>H<sub>14</sub> | |||
|} | |||
<br> | <br> | ||
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=== References === | === References === | ||
<references /> | |||
Latest revision as of 09:11, 26 November 2016
Alkanes are the simplest class of Hydrocarbons. They contain only single bonds between molecules; this means that they are saturated molecules due to each carbon-carbon bond being single. They range in size from Methane, the smallest alkane with a chemical formula of CH4, to long chain molecules which branch and may form different isomers. The general formula for alkanes is CnH2n+2 and this may be used to predict the formula of any alkane[1].The formula shows that the number of hydrogens is double the number of carbons with another two added on.
The formulae of the first six alkanes are displayed in the Table 1 below:
Table 1: Alkane Formulae
| NAME | FORMULA |
|---|---|
| Methane | CH4 |
| Ethane | C2H6 |
| Propane | C3H8 |
| Butane | C4H10 |
| Pentane | C5H12 |
| Hexane | C6H14 |