In the IUPAC system Carboxylic acid is also called _
Correct answer: B. Alkanoic acid
- A. Akinoic acid
- B. Alkanoic acid
- C. Alkenoic acid
- D. Alkyl alkanoate
Explanation
In the IUPAC system, carboxylic acids are also known as alkanoic acids. The suffix "-oic acid" is replaced with "-anoic acid" to indicate the presence of a carboxyl group (-COOH) in the molecule.For example:- Methanoic acid (HCOOH)- Ethanoic acid (CH₃COOH)- Propanoic acid (CH₃CH₂COOH)
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About Nomenclature, Structure and Preparation
Carboxylic acids are prepared by oxidising primary alcohols or aldehydes, hydrolysing nitriles, esters and amides, and carbonating suitable organometallic compounds. Their structures, IUPAC naming, resonance stabilisation and acidic character explain why carboxylic acids differ from alcohols and phenols, despite all containing oxygen and hydrogen.
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