Bài 2.
a) \(\left(1\right)2HCl\rightarrow H_2+Cl_2\)
\(\left(2\right)Cl_2+H_2\rightarrow2HCl\)
\(\left(3\right)2Fe+3Cl_2\underrightarrow{t_o}2FeCl_3\)
\(\left(4\right)2FeCl_3+Fe\rightarrow3FeCl_2\)
\(\left(5\right)2NaOH+Cl_2\rightarrow H_2O+NaCl+NaClO\)
b) \(\left(1\right)2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(\left(2\right)Cl_2+H_2\rightarrow2HCl\)
\(\left(3\right)2HCl+FeO\rightarrow FeCl_2+H_2O\)
\(\left(4\right)3FeCl_2+4HNO_3\rightarrow2FeCl_3+Fe\left(NO_3\right)_3+NO+2H_2O\)
\(\left(5\right)2FeCl_3+Fe\rightarrow3FeCl_2\)
\(\left(6\right)FeCl_3+3AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\downarrow\)
Câu 1:
a)
\(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
\(Mg+Cl_2\underrightarrow{t^o}MgCl_2\)
\(2NaBr+Cl_2\rightarrow2NaCl+Br_2\)
\(2KI+Cl_2\rightarrow2KCl+I_2\)
\(H_2+Cl_2\underrightarrow{as}2HCl\)
\(2NaOH+Cl_2\rightarrow NaCl+NaClO+H_2O\)
\(Cl_2+H_2O⇌HCl+HClO\)
b)
\(Fe+2HCl\rightarrow FeCl_2+H_2\uparrow\)
\(Zn+2HCl\rightarrow ZnCl_2+H_2\uparrow\)
\(CaCO_3+2HCl\rightarrow CaCl_2+CO_2\uparrow+H_2O\)
\(HCl+AgNO_3\rightarrow AgCl\downarrow+HNO_3\)
\(Ba\left(OH\right)_2+2HCl\rightarrow BaCl_2+2H_2O\)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
Câu 2:
a: (1): \(2HCl\rightarrow H_2+Cl_2\)(đk: điện phân dung dịch)
(2): \(Cl_2+H_2\rightarrow2HCl\)(đk: as)
(3): \(3Cl_2+2Fe\rightarrow2FeCl_3\)(điều kiện: t độ)
(4): \(2FeCl_3+Fe\rightarrow3FeCl_2\)(đk: đun sôi dung môi)
(5): \(Cl_2+2NaOH\rightarrow NaClO+NaCl+H_2O\)
b:
(1): \(2KMnO_4+16HCl\rightarrow5Cl_2+8H_2O+2KCl+2MnCl_2\)
(2): \(Cl_2+H_2\rightarrow2HCl\)
(3): \(2HCl+Fe\rightarrow FeCl_2+H_2\)
(4): \(2FeCl_2+Cl_2\rightarrow2FeCl_3\)
(5): \(2FeCl_3+Fe\rightarrow3FeCl_2\)
\(\left(6\right):FeCl_3+3AgNO_3\rightarrow3AgCl+Fe\left(NO_3\right)_3\)
