Octane Formula

Octane Formula

Octane comes under hydrocarbons and consists of carbon and hydrogen atoms. The Octane Formula is C8H18. Petroleum contains the majority of the hydrocarbon groupings. Octane has a variety of structural isomers, although they vary according to the number and placement of carbon chain branches. Edwin L. Drake discovered it in August 1859.

What is Octane?

It is a chemical substance that can be found in gasoline or petrol and is used to gauge the quality of fuel. It is a white liquid with a gasoline-like odour that is volatile and very combustible. Its ratings are based on a fuel’s ability to prevent knocking, which happens when fuel ignites permanently in an engine cylinder, reducing efficiency and possibly damaging the engine. The fuels contain an oxygenate, also known as octane, that prevents knocking by oxygenating the fuel.

Octane Structural Formula

Its molar mass is 114.23 g/mol. It has a 125.6 °C boiling point. Octane’s melting point is -57 °C. It has a 703 kg/m3 density. It is a colourless liquid that is quite combustible. Furthermore, it is an odourless liquid with a gasoline scent. To distinguish it from refined oil, crude oil is one of the many forms of hydrocarbons that can be found in nature. The most significant commercially, however, is natural gas, which is a lighter fraction of hydrocarbons that can be free or dissolved asphalt, tar, or pitch, which are solid or semi-solid forms of hydrocarbons.

The 18 Isomers of octane are:

All isomers of octane are listed below-

2-Methylheptane

3-Methylheptane (2 enantiomers)

4-Methylheptane

3-Ethylhexane

2,2-Dimethylhexane

2,3-Dimethylhexane (2 enantiomers)

2,4-Dimethylhexane (2 enantiomers)

2,5-Dimethylhexane

3,3-Dimethylhexane

3,4-Dimethylhexane (2 enantiomers + 1 meso compound)

3-Ethyl-2-methylpentane

3-Ethyl-3-methylpentane

2,2,3-Trimethylpentane (2 enantiomers)

2,2,4-Trimethylpentane (isooctane)

2,3,3-Trimethylpentane

2,3,4-Trimethylpentane

2,2,3,3-Tetramethylbutane

What is the Formula of Octane?

C8H18 is the Octane Formula. A major commercial form of hydrocarbons is natural gas, which is a lighter fraction of hydrocarbons that can be free or dissolved asphalt, tar, or pitch, which is a solid or semi-solid form of hydrocarbons. Hydrocarbons are found in nature in a variety of forms but are most commonly found as liquid petroleum, which is known as crude oil to distinguish it from refined oil.

Application

Octane is used as a solvent. It is a raw material for chemicals. As a chemical agent, it plays a crucial role in the petroleum industry. It is an ingredient in gasoline. The octane rating is used to assess the fuel’s quality.

Solved Examples

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