write the formula of the conjugate acid for base H2PO

H2PO what?

H2PO4(2-)

To determine the formula of the conjugate acid for a base, you need to understand the concept of acid-base conjugate pairs. In chemistry, an acid and its conjugate base differ by one proton (H+ ion). The conjugate acid of a base is formed by adding one proton to the base.

In this case, the base is H2PO. To find its conjugate acid, we need to add one proton (H+) to the base. Since H2PO has two hydrogens, we can add one hydrogen ion (H+) to form the conjugate acid.

Therefore, the formula for the conjugate acid of H2PO is H3PO.