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Multiple Choice
Which of the following compounds is considered a strong acid in aqueous solution?
A
Ammonia (NH3)
B
Hydrochloric acid (HCl)
C
Water (H2O)
D
Acetic acid (CH3COOH)
Verified step by step guidance
1
Identify the nature of each compound listed in the problem: Ammonia (NH3), Hydrochloric acid (HCl), Water (H2O), and Acetic acid (CH3COOH).
Understand the concept of acid strength: A strong acid is one that completely dissociates in water, releasing a high concentration of hydrogen ions (H+).
Evaluate each compound: Ammonia (NH3) is a weak base, not an acid. Water (H2O) is neutral and not considered an acid. Acetic acid (CH3COOH) is a weak acid, as it only partially dissociates in water.
Recognize that Hydrochloric acid (HCl) is a strong acid because it completely dissociates in aqueous solution, releasing H+ ions and Cl- ions.
Conclude that among the given options, Hydrochloric acid (HCl) is the compound considered a strong acid in aqueous solution.