# What is the conjugate base of HSO4-?

Nov 9, 2015

$S {O}_{4}^{2 -}$

#### Explanation:

Although it has a negative charge, it will never accept a ${H}^{+}$ to form ${H}_{2} S {O}^{4}$(sulfuric acid) . That is because sulfuric acid is a strong acid and completely disassociates in water.

Therefore, the sulfate ion ($S {O}_{4}^{2 -}$) is the conjugate base of $H S {O}_{4}^{-}$.