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QUESTION

# What is the conjugate acid of HPO42− ?

H_2PO_4^-

The conjugate acid of a base is the original species PLUS a proton, H^+. The conjugate base of an acid is the origianl species LESS a proton. Both MASS and CHARGE are conserved.

What are the conjugate bases of HPO_4^(2-), and HSO_4^-?