Question

viết phương trình hóa học hoàn thành sơ đồ sau: Fe3O4<----Fe---->H2---->H2O---->Ca(OH)2

Answer 1

Fe₃O₄ + 4H₂ → 3Fe + 4H₂O 

Fe + 2HCl → FeCl₂ + H₂ 

2H₂ + O₂ → 2H₂O

Ca +2H₂O → Ca(OH)₂ +H₂

Answer 2

 

Answer 3

\(Fe_3O_4+H_2\)➝ Fe + \(H_2O\)

Fe + \(H_2O\) ➝ FeO +\(H_2\)

\(H_2\) + \(O_2\) ➝ \(H_2O\)

Ca + \(H_2O\) ➝ \(Ca\left(OH\right)_2\) +\(H_2\)

 

Answer 4

\(\left(1\right)3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\\ \left(2\right)Fe+2HCl\rightarrow FeCl_2+H_2\\ \left(3\right)2H_2+O_2\underrightarrow{t^o}2H_2O\\ \left(4\right)2H_2O+Ca\rightarrow Ca\left(OH\right)_2+H_2\)