Giải thích các bước giải:
e,
\(\begin{array}{l}
2KCl{O_3} \to 2KCl + 3{O_2}\\
{H_2} + \dfrac{1}{2}{O_2} \to {H_2}O\\
CaO + {H_2}O \to Ca{(OH)_2}\\
Ca{(OH)_2} + C{O_2} \to CaC{O_3} + {H_2}O
\end{array}\)
f,
\(\begin{array}{l}
{H_2} + \dfrac{1}{2}{O_2} \to {H_2}O\\
S{O_3} + {H_2}O \to {H_2}S{O_4}\\
2Al + 3{H_2}S{O_4} \to A{l_2}{(S{O_4})_3} + 3{H_2}\\
{H_2}O \to {H_2} + + \dfrac{1}{2}{O_2}\\
{H_2} + FeO \to Fe + {H_2}O\\
3Fe + 2{O_2} \to F{e_3}{O_4}
\end{array}\)
g,
\(\begin{array}{l}
2KCl{O_3} \to 2KCl + 3{O_2}\\
Ba + \dfrac{1}{2}{O_2} \to BaO\\
BaO + {H_2}O \to Ba{(OH)_2}\\
2P + \dfrac{5}{2}{O_2} \to {P_2}{O_5}\\
{P_2}{O_5} + 3{H_2}O \to 2{H_3}P{O_4}\\
3Mg + 2{H_3}P{O_4} \to M{g_3}{(P{O_4})_2} + 3{H_2}\\
{H_2} + \dfrac{1}{2}{O_2} \to {H_2}O\\
{H_2}O \to {H_2} + \dfrac{1}{2}{O_2}\\
K + {H_2}O \to KOH + \dfrac{1}{2}{H_2}
\end{array}\)
