\(n_{Al}=\dfrac{5,4}{27}=0,2\left(mol\right)\)
PTHH: 2Al + 6HCl ---> 2AlCl3 + 3H2
LTL: \(0,2< \dfrac{0,9}{3}\rightarrow\) HCl dư
Theo pthh: \(\left\{{}\begin{matrix}n_{AlCl_3}=n_{Al}=0,2\left(mol\right)\\n_{H_2}=\dfrac{3}{2}n_{Al}=\dfrac{3}{2}.0,2=0,3\left(mol\right)\end{matrix}\right.\)
\(\rightarrow\left\{{}\begin{matrix}V_{H_2}=0,3.22,4=6,72\left(l\right)\\m_{AlCl_3}=0,2.133,5=26,7\left(g\right)\end{matrix}\right.\)