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Name and draw the structure of an aromatic compound of molecular formula C₈H₈. - Leaving Cert Chemistry - Question (g) - 2005

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Name and draw the structure of an aromatic compound of molecular formula C₈H₈.

Worked Solution & Example Answer:Name and draw the structure of an aromatic compound of molecular formula C₈H₈. - Leaving Cert Chemistry - Question (g) - 2005

Step 1

Name of the aromatic compound

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Answer

The aromatic compound with the molecular formula C₈H₈ can be named as ethylbenzene, dimethylbenzene, or xylene.

Step 2

Structure of the aromatic compound

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Answer

The structure of ethylbenzene is represented as follows:

         CH₂CH₃
           |  
      C₆H₅ - C
           |  
         CH₃

This structure shows the benzene ring (C₆H₅) with an ethyl group (CH₂CH₃) attached. You may also represent xylene (dimethylbenzene) as:

       CH₃
        |  
      C₆H₄-C
           |  
         CH₃

In these representations, each 'C' in the ring is connected with alternating double bonds, and the proper placements of the hydrogens should also be ensured.

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