Question

Viết Pt hoàn thành sơ đồ sau:

A, NaCl => HCl=> Cl₂ => FeCl₃=> FeCl₂=> Fe=> Fe(NO₃)₃

B, Fe₂O₃=> FeCl₃=> Fe(OH)₃=>Fe₂(SO₄)₃=> BaSO₄

Answer 1

\(a.\)

\(NaCl+H_2SO_4\underrightarrow{t^0}NaHSO_4+HCl\)

\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)

\(Fe+\dfrac{3}{2}Cl_2\underrightarrow{t^0}FeCl_3\)

\(2FeCl_3+Fe\rightarrow3FeCl_2\)

\(FeCl_2\underrightarrow{đpdd}Fe+Cl_2\)

\(Fe+2AgNO_3\rightarrow Fe\left(NO_3\right)_2+2Ag\)

\(b.\)

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

\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_2+3NaCl\)

\(2Fe\left(OH\right)_2+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)

\(Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_4\)