Em tham khảo nha:
\(\begin{array}{l}
a)\\
{K_2}O + 2HCl \to 2KCl + {H_2}O\\
MgO + 2HCl \to MgC{l_2} + {H_2}O\\
F{e_3}{O_4} + 8HCl \to 2FeC{l_3} + FeC{l_2} + 4{H_2}O\\
A{l_2}{O_3} + 6HCl \to 2AlC{l_3} + 3{H_2}O\\
BaO + 2HCl \to BaC{l_2} + {H_2}O\\
CaO + 2HCl \to CaC{l_2} + {H_2}O\\
A{g_2}O + 2HCl \to 2AgCl + {H_2}O\\
b)\\
{K_2}O + {H_2}O \to 2KOH\\
C{O_2} + {H_2}O \to {H_2}C{O_3}\\
BaO + {H_2}O \to Ba{(OH)_2}\\
CaO + {H_2}O \to Ca{(OH)_2}\\
S{O_2} + {H_2}O \to {H_2}S{O_3}\\
c)\\
C{O_2} + 2KOH \to {K_2}C{O_3} + {H_2}O\\
A{l_2}{O_3} + 2KOH \to 2Al{O_2} + {H_2}O\\
S{O_2} + 2KOH \to {K_2}S{O_3} + {H_2}O\\
Si{O_2} + 2KOH \to {K_2}Si{O_3} + {H_2}O
\end{array}\)
