Em tham khảo nha :
\(\begin{array}{l}
1)\\
CaC{O_3} \xrightarrow{t^0} C{O_2} + CaO\\
C{O_2} + KOH \to KHC{O_3}\\
KHC{O_3} + HN{O_3} \to KN{O_3} + {H_2}O + C{O_2}\\
KN{O_3} \xrightarrow{t^0} 2KN{O_2} + {O_2}\\
2)\\
KHC{O_3} + HCl \to KCl + C{O_2} + {H_2}O\\
C{O_2} + 2NaOH \to N{a_2}C{O_3} + {H_2}O\\
N{a_2}C{O_3} + 2HN{O_3} \to 2NaN{O_3} + C{O_2} + {H_2}O\\
2NaN{O_3} \xrightarrow{t^0} 2NaN{O_2} + {O_2}
\end{array}\)