5)
\(Fe + S\xrightarrow{{{t^o}}}FeS\)
\(FeS + 2HCl\xrightarrow{{}}FeC{l_2} + {H_2}S\)
\(2{H_2}S + 3{O_2}\xrightarrow{{{t^o}}}2S{O_2} + 2{H_2}O\)
\(S{O_2} + NaOH\xrightarrow{{}}NaHS{O_3}\)
\(2NaHS{O_3} + {H_2}S{O_4}\xrightarrow{{}}N{a_2}S{O_4} + + 2S{O_2} + 2{H_2}O\)
6)
\(Zn + S\xrightarrow{{{t^o}}}ZnS\)
\(ZnS + 2HCl\xrightarrow{{}}ZnC{l_2} + {H_2}S\)
\(2{H_2}S + S{O_2}\xrightarrow{{{t^o}}}3S + 2{H_2}O\)
\(S + {O_2}\xrightarrow{{{t^o}}}S{O_2}\)
\(S{O_2} + 2NaOH\xrightarrow{{}}N{a_2}S{O_3} + {H_2}O\)
\(N{a_2}S{O_3} + 2HCl\xrightarrow{{}}2NaCl + S{O_2} + {H_2}O\)
7)
\(4Fe{S_2} + 11{O_2}\xrightarrow{{{t^o}}}2F{e_2}{O_3} + 8S{O_2}\)
\(S{O_2} + B{r_2} + 2{H_2}O\xrightarrow{{}}{H_2}S{O_4} + 2HBr\)
\({H_2}S{O_4} + Fe\xrightarrow{{}}FeS{O_4} + {H_2}\)
\(2FeS{O_4} + 2{H_2}S{O_4}\xrightarrow{{{t^o}}}F{e_2}{(S{O_4})_3} + S{O_2} + 2{H_2}O\)
\(F{e_2}{(S{O_4})_3} + 6NaOH\xrightarrow{{}}2Fe{(OH)_3} + 3N{a_2}S{O_4}\)
8)
\(2KMn{O_4}\xrightarrow{{{t^o}}}{K_2}Mn{O_4} + Mn{O_2} + {O_2}\)
\(S + {O_2}\xrightarrow{{{t^o}}}S{O_2}\)
\(S{O_2} + 2{H_2}S\xrightarrow{{{t^o}}}3S + 2{H_2}O\)
\(S + Fe\xrightarrow{{{t^o}}}FeS\)
\(FeS + 2HCl\xrightarrow{{}}FeC{l_2} + {H_2}S\)
\({H_2}S + 2NaOH\xrightarrow{{}}N{a_2}S + 2{H_2}O\)
