Em tham khảo nha:
\(\begin{array}{l}
a)\\
N{a_2}S{O_3} + 2HCl \to 2NaCl + S{O_2} + {H_2}O\\
S{O_3}^{2 - } + 2{H^ + } \to S{O_2} + {H_2}O\\
b)\\
N{a_2}S + 2HCl \to 2NaCl + {H_2}S\\
{S^{2 - }} + 2{H^ + } \to {H_2}S\\
c)\\
N{a_2}C{O_3} + {H_2}S{O_4} \to N{a_2}S{O_4} + C{O_2} + {H_2}O\\
C{O_3}^{2 - } + 2{H^ + } \to C{O_2} + {H_2}O\\
d)\\
N{H_4}Cl + NaOH \to NaCl + N{H_3} + {H_2}O\\
N{H_4}^ + + O{H^ - } \to N{H_3} + {H_2}O\\
e)\\
Pb{(N{O_3})_2} + N{a_2}S \to PbS + 2NaN{O_3}\\
P{b^{2 + }} + {S^{2 - }} \to PbS\\
f)\\
N{a_2}C{O_3} + BaC{l_2} \to 2NaCl + BaC{O_3}\\
g)\\
CuC{l_2} + 2NaOH \to Cu{(OH)_2} + 2NaCl\\
C{u^{2 + }} + 2O{H^ - } \to Cu{(OH)_2}\\
h)\\
FeC{l_3} + 3KOH \to Fe{(OH)_3} + 3KCl\\
F{e^{3 + }} + 3O{H^ - } \to Fe{(OH)_3}\\
i)\\
Cu{(OH)_2} + 2HCl \to CuC{l_2} + 2{H_2}O\\
Cu{(OH)_2} + 2{H^ + } \to C{u^{2 + }} + 2{H_2}O\\
k)\\
{(C{H_3}COO)_2}Ca + 2HCl \to 2C{H_3}COOH + CaC{l_2}\\
C{H_3}CO{O^ - } + {H^ + } \to C{H_3}COOH\\
l)\\
3Fe{(OH)_2} + 10HN{O_3} \to 3Fe{(N{O_3})_3} + NO + 8{H_2}O\\
Fe{(OH)_2} + 2{H^ + } + N{O_3} \to 3F{e^{3 + }} + NO + 2{H_2}O
\end{array}\)
Bổ sung câu f
\(C{O_3}^{2 - } + B{a^{2 + }} \to BaC{O_3}\)
