\(Zn+2HCl\rightarrow ZnCl_2+H_2\)
\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
Gọi \(\left\{{}\begin{matrix}n_{Zn}:a\left(mol\right)\\n_{Al}:b\left(mol\right)\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}65a+27b=1,19\\136a+133,5b=4,03\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}a=0,01\\b=0,02\end{matrix}\right.\)
\(\Rightarrow n_{H2}=0,01+0,02.1,5=0,04\left(mol\right)\)
\(V_{H2}=0,04.22,4=8,96\left(l\right)\)