Heptane - Revision history

Jmdonev: 1 revision imported

2021-09-27T00:02:56Z

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energy>Ethan.boechler at 20:22, 17 May 2021

2021-05-17T20:22:20Z

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	[[File:Heptane-3D-balls.png\|thumb\|400px\|framed\|right\|Figure 1. Ball and stick model of heptane, the white balls represent [[hydrogen]] atoms and the black balls represent [[carbon]] atoms.<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]		[[File:Heptane-3D-balls.png\|thumb\|400px\|framed\|right\|Figure 1. Ball and stick model of heptane, the white balls represent [[hydrogen]] atoms and the black balls represent [[carbon]] atoms.<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]

Jmdonev: 1 revision imported

2020-01-31T05:10:10Z

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Energy>Jmdonev at 23:38, 29 January 2020

2020-01-29T23:38:13Z

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	[[File:Heptane-3D-balls.png\|thumb\|400px\|framed\|right\|Figure 1. Ball and stick model of heptane, the white balls represent [[hydrogen]] atoms and the black balls represent [[carbon]] atoms.<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]		[[File:Heptane-3D-balls.png\|thumb\|400px\|framed\|right\|Figure 1. Ball and stick model of heptane, the white balls represent [[hydrogen]] atoms and the black balls represent [[carbon]] atoms.<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]
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	The [[hydrocarbon combustion]] reaction releases [[heat]] [[energy]] and is an example of an [[exothermic reaction]]. The reaction also has a negative [[enthalpy]] change (ΔH) value.		The [[hydrocarbon combustion]] reaction releases [[heat]] [[energy]] and is an example of an [[exothermic reaction]]. The reaction also has a negative [[enthalpy]] change (ΔH) value.

			==For Further Reading==
			*[[Chemical energy]]
			*[[Chemical bond]]
			*[[Combustion]]
			*[[Primary energy]]
			*[[Energy conversion technology]]
			*Or explore a [[Special:Random\|random page]]


	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev at 01:50, 29 August 2017

2017-08-29T01:50:41Z

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	[[File:Heptane-3D-balls.png\|thumb\|400px\|framed\|right\|Figure 1. Ball and stick model of heptane, the white balls represent [[hydrogen]] atoms and the black balls represent [[carbon]] atoms.<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]		[[File:Heptane-3D-balls.png\|thumb\|400px\|framed\|right\|Figure 1. Ball and stick model of heptane, the white balls represent [[hydrogen]] atoms and the black balls represent [[carbon]] atoms.<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]
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	The [[hydrocarbon combustion]] reaction releases [[heat]] [[energy]] and is an example of an [[exothermic reaction]]. The reaction also has a negative [[enthalpy]] change (ΔH) value.		The [[hydrocarbon combustion]] reaction releases [[heat]] [[energy]] and is an example of an [[exothermic reaction]]. The reaction also has a negative [[enthalpy]] change (ΔH) value.
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	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

	~~<languages />~~

Jmdonev: 1 revision imported

2017-08-29T01:46:42Z

1 revision imported

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[[File:Heptane-3D-balls.png|thumb|400px|framed|right|Figure 1. Ball and stick model of heptane, the white balls represent [[hydrogen]] atoms and the black balls represent [[carbon]] atoms.<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]


<onlyinclude>'''Heptane''' is an [[alkane]] with the chemical formula C7H16. As a [[hydrocarbon]], it can undergo [[hydrocarbon combustion]] which gives off heat energy.</onlyinclude>
Heptane is a [[volatile]], colourless [[liquid]] that is odourless when pure.<ref name=pubchem> National Center for Biotechnology Information. (2015). ''Properties of Heptane'' [Online]. Available: http://pubchem.ncbi.nlm.nih.gov/compound/heptane [February 16,2015]. </ref>


Heptane is an important hydrocarbon (or [[organic molecule]] as it, along with pure [[octane]], sets the extreme ends of the [[octane rating]] scale. Heptane is used to set the standard zero point. This means that as a [[fuel]] it burns in a way that is unhelpful within an [[engine]], specifically, it combusts when put under pressure. This is why higher octane ratings are better for an engine. Heptane is a terrible fuel choice for a car since it burns explosively, causing [[octane rating #Pre-Ignition and Knocking|engine knocking]]. As well as setting the zero point for octane rating, heptane is frequently used as a laboratory [[solvent]] due to it's low reactivity with other molecules. Many substances that will not dissolve in [[water]] do dissolve in heptane.<ref> Education Portal. (2015). ''Heptane: Structure, Uses, & Formula'' [Online]. Available: http://education-portal.com/academy/lesson/heptane-structure-uses-formula.html [February 16, 2015]</ref>

==Properties== 
Below is a table of some of the basic properties of heptane.


{| class="wikitable"
|-
| Chemical formula || C7H16
|-
| [[Molar mass]] || 100.21 [[kilogram|gram]]s/[[mole]]
|-
| [[Melting point]] || -91oC<ref name =elmhurst>Charles E. Ophardt. (2003). ''Virtual Chembook - Hydrocarbon Boiling Points'' [Online]. Available: http://www.elmhurst.edu/~chm/vchembook/501hcboilingpts.html [February 16,2015].</ref>
|-
| [[Boiling point]] || 98oC<ref name =elmhurst/>
|}

==Combustion Reaction== 


Heptane undergoes [[hydrocarbon combustion]], combining with [[oxygen]] to form [[carbon dioxide]]. The balanced chemical equation for the complete combustion of heptane is:


<center>C7H16 + 11O2 → 7CO2 + 8H2O + Heat Energy ([[Enthalpy]]) </center>


The [[hydrocarbon combustion]] reaction releases [[heat]] [[energy]] and is an example of an [[exothermic reaction]]. The reaction also has a negative [[enthalpy]] change (ΔH) value.
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==References==
{{reflist}}
[[Category:Uploaded]]

<languages />

J.williams: 1 revision imported

2015-09-18T16:50:58Z

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Jmdonev at 19:23, 17 September 2015

2015-09-17T19:23:14Z

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	<onlyinclude>'''Heptane''' is a [[hydrocarbon]] that can be burned as a [[fuel]]. ~~It's~~ chemical formula is C<sub>7</sub>H<sub>16</sub></onlyinclude>, and it is a volatile, colourless liquid that is odourless when pure.<ref name=pubchem> National Center for Biotechnology Information. (2015). ''Properties of Heptane'' [Online]. Available: http://pubchem.ncbi.nlm.nih.gov/compound/heptane [February 16,2015]. </ref>		<onlyinclude>'''Heptane''' is a [[hydrocarbon]] that can be burned as a [[fuel]]. Its [[chemical]] formula is C<sub>7</sub>H<sub>16</sub></onlyinclude>, and it is a [[volatile]], colourless [[liquid]] that is odourless when pure.<ref name=pubchem> National Center for Biotechnology Information. (2015). ''Properties of Heptane'' [Online]. Available: http://pubchem.ncbi.nlm.nih.gov/compound/heptane [February 16,2015]. </ref>

	[[File:Heptane-3D-balls.png\|400px\|framed\|center\|Figure 1. Ball and stick model of heptane, the white is [[hydrogen]] and the black is [[carbon]].<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]		[[File:Heptane-3D-balls.png\|400px\|framed\|center\|Figure 1. Ball and stick model of heptane, the white is [[hydrogen]] and the black is [[carbon]].<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]

	Heptane is an important hydrocarbon as it, along with pure octane, sets the extreme ends of the [[octane rating]] scale. Heptane is used to set the standard zero point, which means that it is a fuel that burns so poorly within an engine that it could never realistically be used. Since higher octane ratings are better, heptane is a terrible fuel choice for a car since it burns very explosively, causing [[octane rating #Pre-Ignition and Knocking\|engine knocking]]. As well as setting the zero point for octane rating, heptane is frequently used as a laboratory solvent due to it's low reactivity with other molecules. Many substances that will not dissolve in water do dissolve in heptane.<ref> Education Portal. (2015). ''Heptane: Structure, Uses, & Formula'' [Online]. Available: http://education-portal.com/academy/lesson/heptane-structure-uses-formula.html [February 16, 2015]</ref> Heptane undergoes [[hydrocarbon combustion]], combining with [[oxygen]] to form [[carbon dioxide]]. The balanced chemical equation for the complete combustion of heptane is:		Heptane is an important hydrocarbon as it, along with pure [[octane]], sets the extreme ends of the [[octane rating]] scale. Heptane is used to set the standard zero point, which means that it is a fuel that burns so poorly within an [[engine]] that it could never realistically be used. Since higher octane ratings are better, heptane is a terrible fuel choice for a car since it burns very explosively, causing [[octane rating #Pre-Ignition and Knocking\|engine knocking]]. As well as setting the zero point for octane rating, heptane is frequently used as a laboratory solvent due to it's low reactivity with other molecules. Many substances that will not dissolve in [[water]] do dissolve in heptane.<ref> Education Portal. (2015). ''Heptane: Structure, Uses, & Formula'' [Online]. Available: http://education-portal.com/academy/lesson/heptane-structure-uses-formula.html [February 16, 2015]</ref> Heptane undergoes [[hydrocarbon combustion]], combining with [[oxygen]] to form [[carbon dioxide]]. The balanced chemical equation for the complete combustion of heptane is:


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	\| [[Molar mass]] \|\| 100.21 [[kilogram\|gram]]s/[[mole]]		\| [[Molar mass]] \|\| 100.21 [[kilogram\|gram]]s/[[mole]]
	\|-		\|-
	\| Melting ~~Point~~ \|\| -91<sup>o</sup>C<ref name =elmhurst>Charles E. Ophardt. (2003). ''Virtual Chembook - Hydrocarbon Boiling Points'' [Online]. Available: http://www.elmhurst.edu/~chm/vchembook/501hcboilingpts.html [February 16,2015].</ref>		\| [[Melting point]] \|\| -91<sup>o</sup>C<ref name =elmhurst>Charles E. Ophardt. (2003). ''Virtual Chembook - Hydrocarbon Boiling Points'' [Online]. Available: http://www.elmhurst.edu/~chm/vchembook/501hcboilingpts.html [February 16,2015].</ref>
	\|-		\|-
	\| Boiling ~~Point~~ \|\| 98<sup>o</sup>C<ref name =elmhurst/>		\| [[Boiling point]] \|\| 98<sup>o</sup>C<ref name =elmhurst/>
	\|}		\|}

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J.williams: 1 revision imported

2015-08-26T21:31:10Z

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J.williams at 16:54, 12 August 2015

2015-08-12T16:54:42Z

New page

[[Category:Done 2015-06-01]]
<onlyinclude>'''Heptane''' is a [[hydrocarbon]] that can be burned as a [[fuel]]. It's chemical formula is C7H16</onlyinclude>, and it is a volatile, colourless liquid that is odourless when pure.<ref name=pubchem> National Center for Biotechnology Information. (2015). ''Properties of Heptane'' [Online]. Available: http://pubchem.ncbi.nlm.nih.gov/compound/heptane [February 16,2015]. </ref>

[[File:Heptane-3D-balls.png|400px|framed|center|Figure 1. Ball and stick model of heptane, the white is [[hydrogen]] and the black is [[carbon]].<ref>"Heptane-3D-balls". Licensed under Public Domain via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Heptane-3D-balls.png#mediaviewer/File:Heptane-3D-balls.png</ref>]]

Heptane is an important hydrocarbon as it, along with pure octane, sets the extreme ends of the [[octane rating]] scale. Heptane is used to set the standard zero point, which means that it is a fuel that burns so poorly within an engine that it could never realistically be used. Since higher octane ratings are better, heptane is a terrible fuel choice for a car since it burns very explosively, causing [[octane rating #Pre-Ignition and Knocking|engine knocking]]. As well as setting the zero point for octane rating, heptane is frequently used as a laboratory solvent due to it's low reactivity with other molecules. Many substances that will not dissolve in water do dissolve in heptane.<ref> Education Portal. (2015). ''Heptane: Structure, Uses, & Formula'' [Online]. Available: http://education-portal.com/academy/lesson/heptane-structure-uses-formula.html [February 16, 2015]</ref> Heptane undergoes [[hydrocarbon combustion]], combining with [[oxygen]] to form [[carbon dioxide]]. The balanced chemical equation for the complete combustion of heptane is:

<center><m>C_7H_{16} + 11(O_2)\leftrightarrow 7(CO_2) + 8(H_2O)</m></center>

==Properties==
Below is a table of some of the basic properties of heptane.

{| class="wikitable"
|-
| Chemical formula || C7H16
|-
| [[Molar mass]] || 100.21 [[kilogram|gram]]s/[[mole]]
|-
| Melting Point || -91oC<ref name =elmhurst>Charles E. Ophardt. (2003). ''Virtual Chembook - Hydrocarbon Boiling Points'' [Online]. Available: http://www.elmhurst.edu/~chm/vchembook/501hcboilingpts.html [February 16,2015].</ref>
|-
| Boiling Point || 98oC<ref name =elmhurst/>
|}

==References==
{{reflist}}
[[Category:Uploaded]]