Chapter 5, Problem 82QP

Write a balanced equation to describe any acid-base neutralization reaction that might occur when the following substances are mixed.

$\begin{array}{l}\left(\text{a}\right){\text{ H}}_{\text{2}}\left(g\right)\text{ and KOH}\left(aq\right)\hfill \\ \left(\text{b}\right){\text{ H}}_{\text{3}}{\text{PO}}_{\text{4}}\left(aq\right)\text{ and NaOH}\left(aq\right)\hfill \\ \left(\text{c}\right){\text{ H}}_{\text{2}}{\text{SO}}_{\text{4}}\left(aq\right)\text{ and Fe}{\left(\text{OH}\right)}_{\text{2}}\left(s\right)\hfill \end{array}$