\(n_{FeCl_3}=\dfrac{16,25}{162,5}=0,1\left(mol\right)\)
\(2Fe+3Cl_2\rightarrow2FeCl_3\)
0,1 0,15 0,1 (mol)
\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
0,06 0,48 0,15 (mol)
m\(_{KMnO_4}=0,06.158=9,48\left(g\right)\)
\(V_{HCl}=\dfrac{0,48}{1}=0,48\left(l\right)=480\left(ml\right)\)