\(Theo-\text{đ}\text{ề}-b\text{ài}-ta-c\text{ó}:nFe2O3=\dfrac{16}{160}=0,1\left(mol\right)\)
\(Ta-c\text{ó}-PTHH:\)
\(Fe2O3+6HCl\rightarrow2FeCl3+3H2O\)
\(0,1mol....0,6mol.......0,2mol\)
a) Ta có : \(V_{\text{dd}HCl}=\dfrac{0,6}{0,1}=6\left(l\right)\)
b) \(Ta-c\text{ó}:CM_{FeCl3}=\dfrac{0,2}{0,1}=2\left(M\right)\)