The common name of propane 1 3-dioic is_________________?
Correct answer: C. Malonic acid
- A. Oxalic acid
- B. Aromatic acid
- C. Malonic acid
- D. Fumaric acid
Explanation
Propane-1,3-dioic acid has two carboxyl groups on a three-carbon chain, so its accepted common name is malonic acid. Oxalic acid is ethanedioic acid, whereas fumaric acid is butenedioic acid. Students may choose oxalic acid by noticing that it is also a dicarboxylic acid, but its carbon chain is shorter.
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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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