Question

Viết PTHH hoàn thành chuỗi chuyển hóa sau:

\(Fe\underrightarrow{\left(1\right)}FeCl_3\underrightarrow{\left(2\right)}Fe\left(OH\right)_3\underrightarrow{\left(3\right)}Fe_2O_3\underrightarrow{\left(4\right)}Fe_2\left(SO_4\right)_3\underrightarrow{\left(5\right)}FeCl_3\)

Answer 1

(1) 2Fe + 3Cl2 -^t0-> 2FeCl3

(2) FeCl3 + 3NaOH - > Fe(OH)3 + 3NaCl

(3) 2Fe(OH)3 -^t0-> Fe2O3 + 3H2O

(4) Fe2O3 + 3H2SO4(l) - > Fe2(SO4)3 + 3H2O

(5) Fe2(SO4)3 + 3BaCl2 - > 2FeCl3 + 3BaSO4

Answer 2

1. 2Fe + 3Cl2 \(\rightarrow\)2 FeCl3

2. FeCl3 + 3NaOH \(\rightarrow\) Fe(OH)3 + 3NaCl

3. 2Fe(OH)3 \(\rightarrow\) Fe2O3 + 3H2O

4. Fe2O3 + 3H2SO4 \(\rightarrow\) Fe2(SO4)3 + 3H2O

5. Fe2(SO4)3 + 3BaCl2 \(\rightarrow\) 2FeCl3 + 3BaSO4