How many replaceable hydrogen ions does phosphoric acid have?

Phosphoric acid$\left(H_3{\mathrm{PO}}_4\right)$

It is a tribasic acid. When phosphoric acid $\left({\mathrm{H}}_3{\mathrm{PO}}_4\right)$ gets completely dissociated in water, it produces three replaceable hydrogen ions $\left({\mathrm{H}}^{+}\left(\mathrm{aq}\right)\right)$.

Chemical Reaction

• The chemical equation is as follows:

${\mathrm{H}}_3{\mathrm{PO}}_4\left(\mathrm{aq}\right)\rightleftharpoons 3{\mathrm{H}}^{+}\left(\mathrm{aq}\right)+{{\mathrm{PO}}_4}^{3-}\left(\mathrm{aq}\right)$

• Phosphoric acid $\left({\mathrm{H}}_3{\mathrm{PO}}_4\left(\mathrm{aq}\right)\right)$ has three replaceable hydrogen ions $\left({\mathrm{H}}^{+}\left(\mathrm{aq}\right)\right)$.