Define each of the following with one example:

(b) Dibasic acids.

An acid is a substance in which the only positive ion is hydrogen.

A dibasic acid is a substance that produces two hydrogen ions, $\left({\mathrm{H}}^{+}\right)$ per molecule of acid, when it gets completely dissociated in water. For example, Sulfuric acid $\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$.

The chemical equation is as follows:

${\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\rightleftharpoons 2{\mathrm{H}}^{+}\left(\mathrm{aq}\right)+{{\mathrm{SO}}_4}^{2-}\left(\mathrm{aq}\right)$