What is the conjugate acid of HPO4-2?
O <--> H2
now we can say that H2
is the conjugated base of H3
and on the other hand we can say that H3
is the conjugated acid of H2
the definition for the conjugated acid: the acid that will be formed when the base dissociates. Thus in the previous example:
O --> H3
but it's actually the same.
now it should be no problem to answer this question