Conjugate Acid-base Pairs

Question

The conjugate base of H₂PO₄⁻ is:

RankGuru · Accepted Answer

According to the **Bronsted-Lowry Theory**:
- A **Conjugate Base** is the species remaining after an acid has donated a proton ($H^+$).
- Given species: $H_2PO_4^-$
Reaction: $H_2PO_4^- 	o H^+ + HPO_4^{2-}$
- By removing one proton, the charge decreases by 1 (from $-1$ to $-2$).
- Therefore, $HPO_4^{2-}$ is the conjugate base.

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Conjugate Acid-base Pairs

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