\(nHCl=0,2.0,3=0,06\\ 2Al+6HCl=>2AlCl3+3H2\\ =>nAl=0,02\left(mol\right)\\ =>mAl=0,02.27=0,54\left(g\right)\\ tacónAlCl3=0,02\left(mol\right)\\ =>Cm\left(AlCl3\right)=\dfrac{0,02}{0,2}=0,1\left(M\right)\)
a, \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
b, \(n_{HCl}=0,2.0,3=0,06\left(mol\right)\)
Theo PT: \(n_{Al}=\dfrac{1}{3}n_{HCl}=0,02\left(mol\right)\)
\(\Rightarrow m_{Al}=0,02.27=0,54\left(g\right)\)
c, \(n_{AlCl_3}=\dfrac{1}{3}n_{HCl}=0,02\left(mol\right)\)
\(\Rightarrow C_{M_{AlCl_3}}=\dfrac{0,02}{0,2}=0,1\left(M\right)\)