Chapter 7, Problem 4E

Balance the following equations:

(a) $\text{Ag}\left(s\right)+{\text{H}}_{\text{2}}\text{S}\left(g\right)+{\text{O}}_2\left(g\right)\to {\text{Ag}}_{\text{2}}\text{S}\left(s\right)+{\text{H}}_2\text{O}\left(l\right)$

(b) ${\text{P}}_4\left(s\right)+{\text{O}}_2\left(g\right)\to {\text{P}}_4{\text{O}}_{10}\left(s\right)$

(c) $\text{Pb}\left(s\right)+{\text{H}}_2\text{O}\left(l\right)+{\text{O}}_2\left(g\right)\to \text{Pb}{\left(\text{OH}\right)}_2\left(s\right)$

(d) $\text{Fe}\left(s\right)+{\text{H}}_2\text{O}\left(l\right)\to {\text{Fe}}_3{\text{O}}_4\left(s\right)+{\text{H}}_2\left(g\right)$

(e) ${\text{Sc}}_2{\text{O}}_2\left(s\right)+{\text{SO}}_3\left(l\right)\to {\text{Sc}}_2{\left({\text{SO}}_4\right)}_3\left(s\right)$

(f) $\text{Ca}{\left({\text{PO}}_4\right)}_2\left(aq\right)+{\text{H}}_3{\text{PO}}_4\left(aq\right)\to \text{Ca}{\left({\text{H}}_2{\text{PO}}_4\right)}_2\left(aq\right)$

(g) $\text{Al}\left(s\right)+{\text{H}}_2{\text{SO}}_4\left(aq\right)\to {\text{Al}}_2{\left({\text{SO}}_4\right)}_3\left(s\right)+{\text{H}}_2\left(g\right)$

(h) ${\text{TiCl}}_4\left(s\right)+{\text{H}}_2\text{O}\left(g\right)\to {\text{TiO}}_2\left(s\right)+\text{HCl}\left(g\right)$