PT: \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
Ta có: \(n_{HCl}=0,2.0,3=0,06\left(mol\right)\)
a, Theo PT: \(n_{Al}=\dfrac{1}{3}n_{HCl}=0,02\left(mol\right)\)
\(\Rightarrow m_{Al}=0,02.27=0,54\left(g\right)\)
b, Theo PT: \(n_{AlCl_3}=\dfrac{1}{3}n_{Al}=0,02\left(mol\right)\)
\(\Rightarrow C_{M_{AlCl_3}}=\dfrac{0,02}{0,2}=0,1\left(M\right)\)