PTHH: \(FeO+H_2\rightarrow Fe+H_2O\)
PTHH: \(Fe_2O_3+3H_2\rightarrow2Fe+3H_2O\)
PTHH: \(Fe_3O_4+4H_2\rightarrow3Fe+4H_2O\)
Theo PT ta có: \(n_{H2}=n_{H2O}=\dfrac{14,4}{18}=0,8\left(mol\right)\)
\(\Rightarrow m_{H2}=2.0,8=1,6\left(g\right)\)
ADĐLBTKL, ta có: \(m_{hh}+m_{H2}=m_{Fe}+m_{H2O}\)
\(\Rightarrow m_{Fe}=m_{hh}+m_{H2}-m_{H2O}=46,4+1,6-14,4=33,6\left(g\right)\)
Vậy.........