Question

Viết PTHH biểu diễn các chuyển đổi sau:

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

Answer 1

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

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

(3) \(2Fe\left(OH\right)3-^{t0}->Fe2O3+3H2O\)

(4) \(Fe2O3+3H2SO4->Fe2\left(SO4\right)3+3H2O\)

Answer 2

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

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

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

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