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Multiple Choice
Which of the following compounds is considered a strong acid in aqueous solution?
A
Acetic acid (CH3COOH)
B
Water (H2O)
C
Ammonia (NH3)
D
Hydrochloric acid (HCl)
Verified step by step guidance
1
Understand the concept of acid strength: Strong acids completely dissociate in water, releasing all their hydrogen ions (H⁺). Weak acids only partially dissociate.
Identify the chemical formula of each compound: Acetic acid (CH₃COOH), Water (H₂O), Ammonia (NH₃), and Hydrochloric acid (HCl).
Consider the dissociation behavior of each compound in water: Acetic acid is a weak acid, Water is neutral, Ammonia is a weak base, and Hydrochloric acid is a strong acid.
Recall that strong acids like Hydrochloric acid (HCl) dissociate completely in aqueous solution, making them strong acids.
Conclude that Hydrochloric acid (HCl) is the compound that is considered a strong acid in aqueous solution.