Question

\(H_2O\rightarrow H_2\rightarrow Fe\rightarrow FeCl\rightarrow FeCl_3\rightarrow Fe\left(OH\right)_3\)

(1)

(2)

(3)

(4)

Answer 1

(1): 2H₂O =(điện phân)=> 2H₂ + O₂

(2): 3H₂ + Fe₂O₃ =(nhiệt)=> 2Fe + 3H₂O

(3): Fe + 2HCl ===> FeCl₂ + H₂\(\uparrow\)

(4): 2FeCl₂ + Cl₂ =(nhiệt)=> 2FeCl₃

(5): FeCl₃ + 3NaOH ===> Fe(OH)₃\(\downarrow\) + 3NaCl

Answer 2

(1): H2O \(\underrightarrow{đp}\) H2 + O2

(2):H2 + FeO\(\underrightarrow{t0}\) Fe+ H2O

(3):Fe+ 2HCl= FeCl2 + H2

(4)2FeCl2 + Cl2= 2FeCl3

(5)FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl