Definition of Carboxyl Group



In the field of chemistry, a carboxyl group is one of the functional groups present in organic compounds. It is represented as -COOH in which the central carbon atom is double-bonded to an oxygen atom and is singly bonded with a hydroxyl -OH group. It is also known as the carboxy group and carboxyl radicals.

 


When an R group which may be an alkyl, alkenyl, or aryl group, gets attached to the -COOH, it forms a carboxylic acid. The ionization of the carboxyl group happens when the hydrogen is removed from the hydroxyl group. The carbon of the carboxyl remains stable after the release of hydrogen atom due to the sharing of the negative charges between the oxygen atoms.

 

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