Which one of the following is also known as tartaric acid?
Correct answer: B. 2,3-Dihydroxy butanedioic acid
- A. 2,3-dihydroxy butane 1,4-dioic acid
- B. 2,3-Dihydroxy butanedioic acid
- C. 2,3-Dihydroxy butanoic acid
- D. 2,2-Dihydroxy butanoic acid
Explanation
Tartaric acid is also known as 2,3-dihydroxybutanedioic acid. Its chemical formula is C4H6O6. The name "2,3-dihydroxybutanedioic acid" indicates that it is a four-carbon compound (butanedioic acid) with two hydroxyl groups (-OH) attached to the second and third carbon atoms (2,3-dihydroxy). Tartaric acid is naturally found in many fruits, particularly in grapes, and is commonly used in food and beverage industries as an acidulant and flavoring agent.
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About Alcohols and Phenols
Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
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