Giải thích các bước giải:
45,
a,
\(\begin{array}{l}
3Fe + 2{O_2} \to F{e_3}{O_4}\\
4P + 5{O_2} \to 2{P_2}{O_5}\\
C + {O_2} \to C{O_2}
\end{array}\)
b,
\(\begin{array}{l}
2Ag + {O_3} \to A{g_2}O + {O_2}\\
2KI + {O_3} + {H_2}O \to {I_2} + 2KOH + {O_2}
\end{array}\)
c,
\(\begin{array}{l}
S + {O_2} \to S{O_2}\\
S + 3{F_2} \to S{F_6}\\
{H_2} + S \to {H_2}S\\
2Na + S \to N{a_2}S
\end{array}\)
d,
\(\begin{array}{l}
{H_2}S + \dfrac{3}{2}{O_2} \to S{O_2} + {H_2}O\\
{H_2}S + 8HN{O_3} \to {H_2}S{O_4} + 8N{O_2} + 4{H_2}O
\end{array}\)
e,
\(\begin{array}{l}
{H_2}S + NaOH \to NaHS + {H_2}O\\
{H_2}S + 2NaOH \to N{a_2}S + 2{H_2}O
\end{array}\)
f,
\(\begin{array}{l}
S{O_2} + NaOH \to NaHS{O_3}\\
S{O_2} + 2NaOH \to N{a_2}S{O_3} + {H_2}O
\end{array}\)
g, \(2Mg + S{O_2} \to 2MgO + S\)
h,
\(\begin{array}{l}
S{O_2} + B{r_2} + 2{H_2}O \to 2HBr + {H_2}S{O_4}\\
2S{O_2} + {O_2} \to 2S{O_3}
\end{array}\)
i,
\(2NaOH + {H_2}S{O_4} \to N{a_2}S{O_4} + 2{H_2}O\)
\(\begin{array}{l}
2KOH + {H_2}S{O_4} \to {K_2}S{O_4} + 2{H_2}O\\
Ba{(OH)_2} + {H_2}S{O_4} \to BaS{O_4} + 2{H_2}O
\end{array}\)
j,
\(\begin{array}{l}
Cu + 2{H_2}S{O_4} \to CuS{O_4} + S{O_2} + 2{H_2}O\\
2Fe + 6{H_2}S{O_4} \to F{e_2}{(S{O_4})_3} + 3S{O_2} + 6{H_2}O\\
4Zn + 5{H_2}S{O_4} \to 4ZnS{O_4} + {H_2}S + 4{H_2}O
\end{array}\)
k,
\({C_{12}}{H_{22}}{O_{11}} + {H_2}S{O_4} \to 12C + {H_2}S{O_4}.11{H_2}O\)
