\(n_{Al}=\dfrac{10,8}{27}=0,4\left(mol\right)\)
PTHH: \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
a. Theo PT ta có: \(n_{H_2}=\dfrac{0,4.3}{2}=0,6\left(mol\right)\)
\(\Rightarrow V_{H_2}=0,6.22,4=13,44\left(l\right)\)
b. Theo PT ta có: \(n_{HCl}=\dfrac{0,4.6}{2}=1,2\left(mol\right)\)
\(Vdd_{HCl}=n.C_M=1,2.2=2,4\left(l\right)\)
c. Theo PT ta có: \(n_{AlCl_3}=n_{Al}=0,4\left(mol\right)\)
\(\Rightarrow CM_{AlCl_3}=\dfrac{n}{Vdd}=\dfrac{0,4}{2,4}\approx0,17\left(M\right)\)