\(\begin{gathered} (1)\,C + C{O_2}\xrightarrow{{{t^o}}}CO \hfill \\ (2)\,C + {O_2}\xrightarrow{{{t^o}}}C{O_2} \hfill \\ (3)\,CO + CuO\xrightarrow{{{t^o}}}Cu + C{O_2} \hfill \\ (4)\,C{O_2} + C\xrightarrow{{{t^o}}}CO \hfill \\ (5)\,C{O_2} + CaO\xrightarrow{{{t^o}}}CaC{O_3} \hfill \\ (6)\,C{O_2} + 2NaOH \to N{a_2}C{O_3} + {H_2}O \hfill \\ \,\,\,\,\,\,\,C{O_2} + NaOH \to NaHC{O_3} \hfill \\ (7)\,CaC{O_3}\xrightarrow{{{t^o}}}CaO + C{O_2} \hfill \\ (8)\,N{a_2}C{O_3} + 2HCl \to 2NaCl + {H_2}O + C{O_2} \uparrow \hfill \\ \,\,\,\,\,\,\,NaHC{O_3} + HCl \to NaCl + {H_2}O + C{O_2} \uparrow \hfill \\ \end{gathered} \)