\(n_{Fe_3O_4}=\dfrac{23,2}{232}=0,1\left(mol\right)\)
Pt: \(Fe_3O_4+8HCl\rightarrow FeCl_2+2FeCl_3+4H_2O\)
0,1mol ---> 0,8mol----> 0,1mol--> 0,2mol
\(\Rightarrow m_{dd}=\dfrac{0,8.36,5}{10}.100=292\left(g\right)\)
\(\Sigma_{m_{dd\left(spu\right)}}=292+23,2=315,2\left(g\right)\)
\(C\%_{FeCl_2}=\dfrac{0,1.127}{315,2}.100=4,03\%\)
\(C\%_{FeCl_3}=\dfrac{0,2.162,5}{315,2}.100=10,31\%\)