Question

What are the `"conjugate acids"` of `HO^-`, `HCO_3^(-)`, `HPO_4^(2-)`, and `CO_3^(2-)` ions?

Answer 1

Water, carbonic acid, dihydrogen phosphate, and bicarbonate.

Explanation:

For the conjugate acid, simply add a `H^+` unit to the starting material. Mass and charge are conserved, i.e:

`HPO_4^(2-) + H^(+) rarr H_2PO_4^-`

You can do this routine with all the examples.