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What is the IUPAC name of terephthalic acid?(a) 2-Phenylethanoic acid(b) Benzene-1,2-dicarboxylic acid(c) Benzene-1,3-dicarboxylic acid(d) Benzene-1,4-dicarboxylic acidI got this question during an interview.Query is from Nomenclature and Structure of Carboxyl Groups topic in division Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

Answer»

The correct OPTION is (d) Benzene-1,4-dicarboxylic acid

The EXPLANATION: Terephthalic acid is an aromatic dicarboxylic acid with the two carboxyl groups on the opposite ends (para POSITION) of a benzene RING. 2-Phenylethanoic acid consists of only a single carboxyl group.



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