Em tham khảo nha:
\(\begin{array}{l}
1)\\
2K + 2{H_2}O \to 2KOH + {H_2}\\
2Na + 2{H_2}O \to 2NaOH + {H_2}\\
Ba + 2{H_2}O \to Ba{(OH)_2} + {H_2}\\
Ca + 2{H_2}O \to Ca{(OH)_2} + {H_2}\\
2)\\
CaO + {H_2}O \to Ca{(OH)_2}\\
BaO + {H_2}O \to Ba{(OH)_2}\\
N{a_2}O + {H_2}O \to 2NaOH\\
{K_2}O + {H_2}O \to 2KOH\\
3)\\
S{O_2} + {H_2}O \to {H_2}S{O_3}\\
S{O_3} + {H_2}O \to {H_2}S{O_4}\\
{P_2}{O_5} + 3{H_2}O \to 2{H_3}P{O_4}\\
{N_2}{O_5} + {H_2}O \to 2HN{O_3}
\end{array}\)
