Which of the following is the strongest acid?
Correct answer: C. Trichloroethanoic acid
- A. Propanoic acid
- B. Fluoroethanoic acid
- C. Trichloroethanoic acid
- D. Nitroethanoic acid
Explanation
Trichloroacetic Acid (TCA) is a much stronger acid than all the acids mentioned in the options, from a chemical ionization standpoint, because the electronegative Chlorine atoms draw electron density away from the carboxyl end of the molecule, creating a partial positive charge on the carboxyl group, and allowing easier removal of the positively charged Hydrogen ion, H+.
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About Carboxylic Acids
Carboxylic acids are named and studied through the combined effects of the carbonyl and hydroxyl groups, their preparation, acidity and hydrogen bonding. Reactions include neutralisation, esterification, reduction and conversion into acid chlorides, anhydrides, esters and amides, with emphasis on how these derivatives interconvert.
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