Question

Give the formula for the conjugate base of each acid.

A.HSO4-

B.H3PO4

C.HPO42-

I have my answers as

h2so4
h2po4
h2po4-

my answrers are wrong, please help

Answer 1

I think you've missed the boat with regard to conjugate acids/bases. I think students make this much harder than it is. Here is the simple scoop.

From whatever you have, if you want the BASE you take away a H. If you want the
ACID you add a H.
HSO4. The conjugate base is SO4^2-, the conjugate acid is H2SO4
For B the C.base is H2PO4^-.
For C it will be ......