Answer
Hydrogen sulfite $(HS{O_3}^-)$ is the conjugate partner of $S{O_3}^{2-}$.
Work Step by Step
1. Identify if the substance is an acid or a base (or both):
- $S{O_3}^{2-}$ is a base.
2. Since $S{O_3}^{2-}$ is a base, add one proton to it:
- Add one hydrogen and sum one to the charge:
$S{O_3}^{2-} -- \gt HS{O_3}^-$
- This is the conjugate acid of $S{O_3}^{2-}$.
3. Name it:
$S{O_3}^{2-}$: Sulfite ion.
$HS{O_3}^- = H^+ + S{O_3}^{2-}$; Therefore:
$HS{O_3}^-$ = Hydrogen sulfite.
