3-ethylhexane is a branched hydrocarbon whose structure is given in the attached image.
What is the structure of 3-ethylhexane?
3-ethylhexane is a branched hydrocarbon which is composed of a straight chain hexane with an ethyl group substituted at the number 3 carbon atom of the straight chain hexane molecule.
Branched chain hydrocarbons are hydrocarbons which have branches at various positions of the straight chain root hydrocarbon.
In naming branched chain hydrocarbons, the lowest possible numbering is assigned to the carbon atom bearing the substituent group.
Substituent groups in branched-chain hydrocarbons may be alkyl groups, aryl groups, hydroxyl groups, or the halogens.
Branching in hydrocarbons produces remarkable changes in the melting and boiling point of the compounds compared to the linear unbranched hydrocarbons,
Branching in hydrocarbons results in higher melting and boiling points due to better stacking and surface area contact.
In conclusion, branched hydrocarbons have higher melting and boiling points than the unbranched hydrocarbons.
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