Đáp án:
Bạn tham khảo ở dưới nhé
Giải thích các bước giải:
A,
\(\begin{array}{l}
FeS + 2HCl \to FeC{l_2} + {H_2}S\\
{H_2}S + \dfrac{3}{2}{O_2} \to {H_2}O + S{O_2}\\
S{O_2} + \dfrac{1}{2}{O_2} \to S{O_3}\\
S{O_3} + {H_2}O \to {H_2}S{O_4}\\
BaO + {H_2}S{O_4} \to BaS{O_4} + {H_2}O
\end{array}\)
B,
\(\begin{array}{l}
2KCl + 2{H_2}O \to 2KOH + C{l_2} + {H_2}\\
2Fe + 3C{l_2} \to 2FeC{l_3}\\
2FeC{l_3} + 3Ba{(OH)_2} \to 2Fe{(OH)_3} + 3BaC{l_2}\\
BaC{l_2} + N{a_2}S{O_4} \to BaS{O_4} + 2NaCl\\
2NaCl + 2{H_2}O \to 2NaOH + {H_2} + C{l_2}
\end{array}\)
C,
\(\begin{array}{l}
4Fe{S_2} + 11{O_2} \to 2F{e_2}{O_3} + 8S{O_2}\\
S{O_2} + C{l_2} + 2{H_2}O \to {H_2}S{O_4} + 2HCl\\
FeS + 2HCl \to FeC{l_2} + {H_2}S\\
{H_2}S + 4C{l_2} + 4{H_2}O \to {H_2}S{O_4} + 8HCl\\
BaO + {H_2}S{O_4} \to BaS{O_4} + {H_2}O
\end{array}\)
D,
\(\begin{array}{l}
Mn{O_2} + 4HCl \to MnC{l_2} + C{l_2} + 2{H_2}O\\
{H_2} + C{l_2} \to 2HCl\\
2HCl \to {H_2} + C{l_2}\\
2Ca{(OH)_2} + 2C{l_2} \to CaC{l_2} + Ca{(ClO)_2} + 2{H_2}O\\
CaC{l_2} + 2{H_2}O \to Ca{(OH)_2} + 2{H_2} + C{l_2}
\end{array}\)
