Em tham khảo nha:
\(\begin{array}{l}
*\\
2NaCl + {H_2}S{O_4} \to 2HCl + N{a_2}S{O_4}\\
A:HCl\\
B:N{a_2}S{O_4}\\
Mn{O_2} + 4HCl \to MnC{l_2} + C{l_2} + 2{H_2}O\\
C:C{l_2}\\
D:MnC{l_2}\\
E:{H_2}O\\
C{l_2} + 2NaBr \to 2NaCl + B{r_2}\\
F:B{r_2}\\
G:NaCl\\
B{r_2} + 2NaI \to 2NaBr + {I_2}\\
H:NaBr\\
I:{I_2}\\
NaCl + AgN{O_3} \to NaN{O_3} + AgCl\\
J:NaN{O_3}\\
K:AgCl\\
HCl + NaOH \to NaCl + {H_2}O\\
*\\
Mn{O_2} + 4HCl \to MnC{l_2} + C{l_2} + 2{H_2}O\\
A:HCl\\
B:C{l_2}\\
C:{H_2}O\\
C{l_2} + {H_2} \to 2HCl\\
Fe + 2HCl \to FeC{l_2} + {H_2}\\
D:Fe\\
2Fe + 3C{l_2} \to 2FeC{l_3}\\
C{l_2} + {H_2}O \to HCl + HClO
\end{array}\)
