\(n_{Al}=\dfrac{2,7}{27}=0,1(mol)\\ PTHH:2Al+6HCl\to 2AlCl_3+3H_2\\ \Rightarrow n_{HCl}=3n_{Al}=0,3(mol)\\ \Rightarrow V_{dd_{HCl}}=\dfrac{0,3}{0,5}=0,6(l)\)
Bảo toàn nguyên tố Cl, Al:
\(n_{HCl}=n_{Cl}=3n_{AlCl_3}=3n_{Al}=0,3\left(mol\right)\)
\(\Rightarrow V=\dfrac{0,3}{0,5}=0,6\left(l\right)\)