Question

"The conjugate acid of HSO4- is

A. SO42^-.
B. HSO_4.
C. H2SO_4.
D. H2SO_4^-.
E. HSO_3^-."

Answer 1

The conjugate acid of HSO4- is H2SO4-.

Step-by-step explanation:

The conjugate acid of HSO4- is D. H2SO4-.

The hydrogen sulfate ion (HSO4-) is both the conjugate base of H2SO4 and the conjugate acid of SO42-. Just like water, HSO4- can act as either an acid or a base, depending on whether the other reactant is a stronger acid or a stronger base. Conversely, the sulfate ion (SO42-) is a polyprotic base that can accept two protons.