\(\begin{gathered} (1)\,S + {O_2}\xrightarrow{{{t^0}}}S{O_2} \uparrow \hfill \\ (2)\,2S{O_2} + {O_2}\xrightarrow{{t0,{V_2}{O_5}}}2S{O_3} \hfill \\ (3)\,S{O_2} + N{a_2}O\xrightarrow{{}}N{a_2}S{O_3} \hfill \\ (4)\,S{O_3} + {H_2}O\xrightarrow{{}}{H_2}S{O_4} \hfill \\ (5)\,2{H_2}S{O_4}(đặc) + Cu\xrightarrow{{{t^0}}}CuS{O_4} + S{O_2} + 2{H_2}O \hfill \\ (6)\,S{O_2} + {H_2}O\underset{{}}{\overset{{}}{\longleftrightarrow}}{H_2}S{O_3} \hfill \\ (7)\,{H_2}S{O_3} + 2NaOH\xrightarrow{{}}N{a_2}S{O_3} + 2{H_2}O \hfill \\ (8)\,N{a_2}S{O_3} + 2HCl\xrightarrow{{}}2NaCl + {H_2}O + S{O_2} \hfill \\ (9)\,{H_2}S{O_4} + 2NaOH\xrightarrow{{}}N{a_2}S{O_4} + 2{H_2}O \hfill \\ (10)N{a_2}S{O_4} + BaC{l_2}\xrightarrow{{}}BaS{O_4} + 2NaCl \hfill \\ \end{gathered} \)
