Because they are saturated,’ saturated hydrocarbons are hydrocarbons in which all of the carbon atoms are covalently linked to four other atoms and are therefore referred to as such. This implies that no carbon-carbon multiple bonds exist in these organic compounds.
As a general rule, the phrase “saturated hydrocarbon” is used to refer to alkanes, which are acyclic hydrocarbon compounds that contain only sp3 hybridised carbon atoms. An alkane’s general formula is CnH2n+2, which stands for carbon, hydrogen, and oxygen. The structure of the propane molecule (C3H8) can be seen in the illustration below, where it can be seen that the propane molecule is ‘saturated’ with hydrogen atoms and cannot accommodate any more in the parent chain.
Butane is a chemical compound (C4H10)
Octane is a fuel that has a high octane rating (C8H18)
Cyclohexane is a chemical compound (C6H12)
Cyclopropane is a chemical compound (C3H6)
Cycloalkanes are alkanes that have a monocyclic ring structure, as opposed to dicyclic alkanes. Due to the fact that all of the carbon-carbon bonds in cycloalkanes are single bonds, they are classified as saturated hydrocarbons by the scientific community. The general formula for a saturated hydrocarbon can be written as CnH(2n + 2 – 2r) where r denotes the total number of rings in the molecule and 2 denotes the saturation level.
Variety of saturated hydrocarbons
A saturated hydrocarbon can have a linear, branched, or ring-shaped structure, and as a result, it can be classified into one of the three types of saturated hydrocarbons:
Alkanes cycloalkanes
However, it is important to note that even polycyclic alkanes (alkanes with multiple rings in their structures) are classified as cycloalkanes and, as a result, are considered to be a type of saturated hydrocarbon (see below).
Alkanes
Alkanes can have either a linear or a branched carbon chain as part of their chemical structure. Almost all of the carbon atoms in these saturated hydrocarbons have been hybridised with sp³ electrons. The melting point and boiling point of an alkane are proportional to the length of the carbon chain in the compound. The melting or boiling point of a substance increases as the length of the chain increases. Due to the fact that molecules with long carbon chains have high molecular weights, this is true.
Alkanes containing up to four carbon atoms are gases at standard temperatures, while alkanes containing five to seventeen carbon atoms are liquids at standard temperatures. The majority of alkanes with more than 18 carbon atoms are solids when stored at room temperature.
All alkanes with more than three carbon atoms have the potential to exhibit chain isomerism. An illustration illustrating the various chain isomers of butane that could exist (C4H10).
The total number of carbon atoms in an alkane determines the number of possible chain isomers that can exist for that alkane. The chain isomers of butane (C2H2) are only two; on the other hand, the chain isomers of octane (C8H18) are a total of eighteen.
Cycloalkanes
Cycloalkanes are characterised by a ring-shaped arrangement of carbon atoms that have been hybridised with sp3. The ring in these saturated hydrocarbons, on the other hand, has the potential to branch into side chains.
The physical properties of cycloalkanes are similar to those of alkanes in some respects, but they differ in others.
When compared to alkanes with the same number of carbon atoms, the melting and boiling points of cycloalkanes are generally higher.
Cycloalkanes are subject to ring strain as a result of their structural characteristics. The fact that cyclopropane has a carbon-carbon bond angle of 60o means that it has the highest ring strain of any of the cycloalkanes in existence.
In what applications do Saturated Hydrocarbons find use?
Alkanes are widely used in a variety of applications, including fuels, heating oils, and solvents. Other applications for saturated hydrocarbons are listed in the following section.
Methane, the most basic of the alkanes, is used as a fuel in a variety of devices such as automobiles, water heaters, and ovens. Liquid methane, in its highly refined form, has the potential to be used as rocket fuel.
Ethane is used as a refrigerant in a number of cryogenic refrigeration systems. It’s also used in the production of ethylene, which is another useful chemical.
It is a saturated hydrocarbon known as propane that is used as a propellant in a number of aerosol sprays. This compound is also used as a fuel for hot air balloons, according to the manufacturer. October is an extremely important component of gasoline because it helps to keep the engine from deteriorating.
Cycloalkanes are also found in a variety of products such as motor fuel, diesel, petroleum gas, and other heavy oils. Cycloalkanes are used in the production of rubber and nylon, amongst other materials.
unsaturated hydrocarbons
Unsaturated hydrocarbon that can be distinguished by the presence of one or more benzene rings or by chemical behaviour that is similar to benzene It is distinguished by the presence of three double bonds that alternate with single bonds between carbon atoms within the ring structure (compared with olefins). Aromatic compounds are typically more reactive and have higher solvency than paraffin and naphthenic as a result of the presence of multiple they react with other bonds. Aromatics readily undergo electrophilic substitution, which means that active molecular groups, such as nitrates, sulfonates, and other halogens, form new aromatic compounds. Aromatics are widely used as petrochemical building blocks in the production of pharmaceuticals, dyes, plastics, and a wide range of other chemicals, among other things. Saturated hydrocarbons include alkenes with one double bond and alkynes with one triple bond, which are both classified as unsaturated hydrocarbons.
Conclusion
Organic compounds are carbon-based compounds that contain carbon. Organic compounds contain hydrogen in the majority of cases, and many organic compounds also contain oxygen or other elements in addition to carbon, as well as other elements. As a result, hydrocarbons, which are composed solely of hydrogen and carbon, constitute the vast majority of organic compounds.