Em tham khảo nha:
\(\begin{array}{l}
Ba{(N{O_3})_2} + {K_2}C{O_3} \to BaC{O_3} + 2KN{O_3}\\
Ba{(N{O_3})_2} + {H_2}S{O_4} \to BaS{O_4} + 2HN{O_3}\\
{K_2}C{O_3} + MgC{l_2} \to MgC{O_3} + 2KCl\\
{K_2}C{O_3} + {H_2}S{O_4} \to {K_2}S{O_4} + C{O_2} + {H_2}O\\
MgC{l_2} + 2NaOH \to Mg{(OH)_2} + 2NaCl\\
{H_2}S{O_4} + 2NaOH \to N{a_2}S{O_4} + 2{H_2}O
\end{array}\)