
State the difference between aliphatic and aromatic functional groups.
Answer
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Hint: The answer to this question is based on the basic concept of chemistry that deals with the definition of these terms which is based on the open chain and ring structure and this fact leads you to the correct answer.
Complete answer:
In our lower classes of chemistry, we have studied the basic concepts of organic chemistry that deal with the concept of defining and differentiating organic compounds that are hydrocarbon based on the structural arrangement.
We shall now see what are the aliphatic and aromatic compounds and how are they differentiated.
Note:
Note that the aromaticity of the compound is identified based on the rule which is called as Huckel’s rule which states that the compound should be a closed ring with the delocalisation of pi – electrons in them and has to follow the 4n+2 rule.
Complete answer:
In our lower classes of chemistry, we have studied the basic concepts of organic chemistry that deal with the concept of defining and differentiating organic compounds that are hydrocarbon based on the structural arrangement.
We shall now see what are the aliphatic and aromatic compounds and how are they differentiated.
Aliphatic functional groups | Aromatic functional groups |
Aliphatic compounds are those hydrocarbons that are the open chain compounds and also closed chains. | Aromatic compounds are those who have only a closed chain structure. |
They can be saturated as well as unsaturated where the system can be open as well as closed chain. | They are special classes of unsaturated hydrocarbon which is based on the six carbon moieties that is called benzene. |
Usually they are of three types based on the number of bonds between them that is single bonded aliphatic compounds are called alkanes, double bonded are the alkenes and triple bonded are the alkynes. | They are also called as arenes or aromatics and the compounds are having a conjugated planar ring system which is further accompanied by delocalised pi – electron that is alternating double and single bonds |
A functional group attached to these compounds are aliphatic functional groups | A functional group attached to these compounds are aromatic functional groups |
Examples for aliphatic compounds are methane, propane, butane etc. | Examples for aromatic compounds are benzene, toluene etc. |
Note:
Note that the aromaticity of the compound is identified based on the rule which is called as Huckel’s rule which states that the compound should be a closed ring with the delocalisation of pi – electrons in them and has to follow the 4n+2 rule.
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