For the reaction h2po4- haso4 2-hpo4 2-+h2aso4- what species are a conjugate acid-base pair?

Ionic equation:

The acid and base in a conjugate pair differ by only one proton . The acid loses one proton to produce a conjugate base, whereas the base gains a proton to produce its conjugate acid.

loses one proton to produce in this reaction.

Meanwhile, gains one proton to form .

Therefore

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