Question $10$

Which of the following chemical equations corresponds to $K_{b1}$ for $S{O}_3^{2-}?$

$H_{2}S{O}_3(aq)+O{H}^{-}(aq)HS{O}_3^{-}(aq)+H_{2}O(l)$

$HS{O}_3^{-}(aq)+O{H}^{-}(aq)S{O}_3^{2-}(aq)+H_{2}O(l)$

$S{O}_3^{2-}(aq)+H_{2}O(l)HS{O}_3^{-}(aq)+O{H}^{-}(aq)$

$S{O}_3^{2-}(aq)+H_3{O}^{+}(aq)HS{O}_3^{-}(aq)+H_{2}O(l)$

$HS{O}_3^{-}(aq)+H_{2}O(l)H_{2}S{O}_3(aq)+O{H}^{-}(aq)$