Ta có:
\(\left\{{}\begin{matrix}n_{Al}=\frac{5,4}{27}=0,2\left(mol\right)\\n_S=\frac{4,8}{32}=0,15\left(mol\right)\end{matrix}\right.\)
\(PTHH:2Al+3S\rightarrow Al_2S_3\)
Ban đầu :__0,2____0,15___
Phứng : __0,1____0,15____0,05
Sau : ____0,1_______0____0,05
\(Al_2S_3+6HCl\rightarrow2AlCl_3+3H_2S\)
0,05_______________________0,15
\(\Rightarrow V_{H2S}=0,15.22,4=3,36\left(l\right)\)
\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
0,1__________________0,15
\(\Rightarrow V_{H2}=0,15.22,4=3,36\left(l\right)\)
\(\Rightarrow\%V_{H2S}=\%V_{H2}=50\%\)