\(n_{HCk}=1,5.0,2=0,6\left(mol\right)\)
a. \(PTHH:Fe_2O_3+6HCl\rightarrow2FeCl_2+3H_2\)
\(n_{Fe2O3}=\frac{n_{HCl}}{6}=\frac{0,6}{6}=0,1\left(mol\right)\)
\(\rightarrow m_{Fe2O3}=0,1.160=16\left(g\right)\)
b. \(n_{FeCl3}=\frac{n_{HCl}}{3}=\frac{0,6}{3}=0,2\left(mol\right)\)
\(\rightarrow CM_{FeCl3}=\frac{0,2}{0,4}=0,5M\)