Question

What is the conjugate base of HSO$_4^-$?

• A. SO$_4^{2-}$
• B. H$_2$SO$_3$
• C. OH$^-$
• D. H$_2$SO$_4$

Hint:

To find the conjugate base of an acid, remove one H$^+$ from the acid and decrease the charge by 1.

Answer 1

The Correct Option is A

• A conjugate base is formed when an acid donates a proton (H$^+$).
• HSO$_4^-$ is the hydrogen sulfate ion. When it loses a proton, it forms SO$_4^{2-}$ (sulfate ion), which is its conjugate base.