Among the options provided, HIO3 (iodic acid) is considered a strong acid. Strong acids are characterized by their ability to completely dissociate in aqueous solution, releasing protons (H+) and causing a significant increase in the concentration of hydrogen ions in the solution.
Let’s break down each of the options:
- HClO2 (chlorous acid) is a weak acid. It does not fully dissociate in solution.
- HBrO2 (bromous acid) also behaves as a weak acid with partial dissociation.
- HClO (hypochlorous acid) is known to be a weak acid as well.
- HIO3 (iodic acid), on the other hand, is strong. It completely ionizes in water, making it a strong acid.
In summary, if you want to identify a strong acid from the options, HIO3 is the correct choice.