\(n_{Fe}=n_{H_2}=0,1\left(mol\right)\)
\(\Rightarrow m_{Fe}=5,6\left(g\right)\)
\(\Rightarrow m_{Fe_2O_3}=16\left(g\right)\)
\(\Rightarrow n_{Fe}=2n_{Fe_2O_3}=0,2\left(mol\right)=n_{FeCl_3}\)
Lại có : \(n_{HCl}=2n_{H_2}+3n_{FeCl_3}=0,8\left(mol\right)\)
\(\Rightarrow m_{ddHCl}=292\left(g\right)\)
\(\Rightarrow V=\dfrac{2920}{11}\left(ml\right)=\dfrac{73}{275}\left(l\right)\)
\(\Rightarrow C_{MFeCl_3}=\dfrac{0,2}{\dfrac{73}{275}}=\dfrac{55}{73}\left(M\right)\)