alleryStart learning →Which compound is listed among the common strong acids?
AAcetic acid, CH3CO2H
BCarbonic acid, H2CO3
CPerchloric acid, HClO4
DHypochlorous acid, HOCl
Answer & Solution
Correct answer: C. Perchloric acid, HClO4
1. Strong acids react essentially completely with water to give hydronium ions.
2. Only a handful are common, and the list holds HBr, HCl, HI, HNO3, HClO4 and H2SO4.
3. Perchloric acid is on that list, so it is strong.
4. Acetic acid is the familiar weak acid of vinegar, and hypochlorous acid is treated as weak.
5. So perchloric acid is the strong one here.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 4 "Stoichiometry of Chemical Reactions", section 4.2 Classifying Chemical Reactions_
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