What is the conjugate acid of HPO4^2-?

1 Answer
Nov 29, 2015

The conjugate acid of any species, is that species plus a proton; so it's #H_2PO_4^(-)#.

Explanation:

When we add a proton, we must conserve both mass and charge, we add #H^+# to #HPO_4^(2-)# so the conjugate acid is simply #H_2PO_4^(-)#. What is the conjugate acid of #H_2PO_4^(-)#?

See also here.