Carboxylic acid

In chemistry, especially in organic chemistry and biochemistry, carboxylic acid refers to a specific functional group of the form

  O=C-OH
    |
    R  (where R is a hydrogen or organic group)

or any molecule containing such a functional group.

Some carboxylic acids include

 HCOOH   formic acid (found in insect stings, formic refers to ants)

 CH3COOH   acetic acid  (found in vinegar)

 CH3CH2COOH  propanoic acid

 C6H5COOH   benzoic acid (sodium benzoate, the sodium salt of benzoic acid is used as a food preservative)

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