Define (1) Hydro Carbons (2) Aliphatic Hydro Carbons (3) Alicyclic Hydro Carbons (4) Aromatic Hydro Carbons. | web4study

Define (1) Hydro Carbons (2) Aliphatic Hydro Carbons (3) Alicyclic Hydro Carbons (4) Aromatic Hydro Carbons.



(i) Hydrocarbons:

Hydrocarbons are organic compounds which contain only carbons and hydrogen in their structure.

(a) Saturated Hydrocarbons:

They contain only single bonds between the carbon atoms. The valency of “C” is fully utilized

Examples: All Alkanes

(b) Unsaturated Hydrocarbons:

Unsaturated Hydrocarbons are those which contain one or more double or triple bonds. It means that the valency of carbons is not fully utilized. Examples: Alkenes and Alkynes

 

(ii) Aliphatic Hydrocarbons:

These are composed of open chains of Carbon atoms. They can be: (a) Saturated (b) Unsaturated

(a) Saturated:

Saturated Hydrocarbons contain only single bonds between C atoms. e.g. Alkanes

(b) Unsaturated:

Unsaturated Hydrocarbons contain one or more double or triple bonds. e.g. Alkenes Ethene

 

(iii) Alicyclic Hydrocarbons:

Alicyclic Hydrocarbons contain carbon atoms arranged in rings. They have two fewer hydrogen atoms than Alkanes.

 

(iv) Aromatic Hydrocarbons:

Aromatic compounds are hydrocarbons which contain six-member ring (Benzene ring) into which there is three carbon. Carbon alternate double bonds. They have a specific smell.

 


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