Question

Hoàn thành dãy chuyển hóa sau :
Fe(NO3)3 -> Fe(OH)3 -> Fe2O3 -> FeCl3 -> FeCl2 -> FeCl3 -> AgCl

Answer 1

\(Fe\left(NO_3\right)_3+3KOH\rightarrow3KNO_3+Fe\left(OH\right)_3\downarrow\)

\(2Fe\left(OH\right)_3\xrightarrow[]{t^o}Fe_2O_3+3H_2O\)

\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)

\(2FeCl_3+Fe\rightarrow3FeCl_2\)

\(FeCl_2+\dfrac{1}{2}Cl_2\rightarrow FeCl_3\)

\(FeCl_3+3AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\downarrow\)

Answer 2

(1) Fe(NO₃)₃ + 3NaOH ---> Fe(OH)₃ + 3NaNO₃

(2) 2Fe(OH)₃ ---t^o---> Fe₂O₃ + 3H₂O

(3) Fe₂O₃ + 6HCl ---> 2FeCl₃ + 3H₂O

(4) Fe + 2FeCl₃ ---> 3FeCl₂

(5) \(FeCl_2+2AgNO_3--->2AgCl\downarrow+Fe\left(NO_3\right)_2\)