Category: Everyday Science | Last updated: 2026-09-18

What is the conjugate base of H2PO4-?

A) H3PO4

B) HPO4 2-

C) PO4 3-

D) H2PO4-

Explanation

A conjugate base is formed by removing one proton: H2PO4- → HPO4²- + H+.

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