Đổi : 500ml=0,5l
\(n_{HCl}=0,2.1,2=0,6\left(mol\right)\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
x_____2x________x ___ x
\(ZnO+2HCl\rightarrow ZnCl_2+H_2O\)
y_______2y_______ y___________
\(\left\{{}\begin{matrix}56x+81y=19,3\\2x+2y=0,6\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=0,2\\y=0,1\end{matrix}\right.\)
\(V_{H2}=0,2.22,4=4,48\left(l\right)\)
\(\Rightarrow CM_{FeCl2}=\frac{0,2}{0,5}=0,4M\)
\(\Rightarrow CM_{ZnCl2}=\frac{0,1}{0,5}=0,2M\)