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Multiple Choice
Which of the following compounds is considered a strong acid in aqueous solution?
A
Hydrochloric acid (HCl)
B
Ammonia (NH3)
C
Water (H2O)
D
Acetic acid (CH3COOH)
Verified step by step guidance
1
Understand the concept of acid strength: Strong acids completely dissociate in water, releasing all their hydrogen ions, while weak acids only partially dissociate.
Identify the chemical formula of each compound: Hydrochloric acid (HCl), Ammonia (NH3), Water (H2O), and Acetic acid (CH3COOH).
Recall that hydrochloric acid (HCl) is a well-known strong acid, meaning it fully dissociates in aqueous solution.
Consider the dissociation behavior of the other compounds: Ammonia (NH3) is a weak base, Water (H2O) is neutral, and Acetic acid (CH3COOH) is a weak acid.
Conclude that among the given options, hydrochloric acid (HCl) is the compound that is considered a strong acid in aqueous solution.