Final answer:
b. NaHSO₄ is the stronger acid compared to NaHSO₃ because it fully dissociates in water, releasing more hydrogen ions.
Step-by-step explanation:
In this case, b. NaHSO₄ is the stronger acid compared to NaHSO₃. The strength of an acid is determined by its ability to release hydrogen ions (H⁺) in water.
When dissolved in water, NaHSO₄ dissociates completely, releasing all of its hydrogen ions, while NaHSO₃ only partially dissociates, releasing fewer hydrogen ions. Therefore, NaHSO₄ is the stronger acid.