\(n_{Fe_2O_3}=\dfrac{8}{160}=0.05\left(mol\right)\)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
\(0.05........0.3...........0.1\)
\(m_{HCl}=0.3\cdot36.5=10.95\left(g\right)\)
\(m_{FeCl_3}=0.1\cdot162.5=16.25\left(g\right)\)
a). Fe2O3 + 6HCl -> 2FeCl3 + 3H2O
1 6 2 3
0,05 0,3 0,1
b). nFe2O3= \(\dfrac{8}{160}\)= 0,05 (mol)
=> mHCl= n . M= 0,3 .36,5=10,95g.
c). nFeCl3= \(\dfrac{0,3.2}{6}\)= 0,1(mol)
=>mFeCl3= n . M= 0,1 . 162,5=16,25g