\( \mathrm{HSO}_{3}{ }^{1-} \) is an amphoteric substance, meaning it can act as both an acid and a base.
As an acid, it donates a proton (H+) to become \( \mathrm{SO}_{3}{ }^{2-} \). The dissociation equation is:
\[ \mathrm{HSO}_{3}{ }^{1-} \rightarrow
Show more…