Ta có: \(n_{Al}=\dfrac{m_{Al}}{M_{Al}}=\dfrac{2,7}{27}=0,1\left(mol\right)\)
PT: \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
a, Theo PT: \(n_{H_2\left(LT\right)}=\dfrac{3}{2}n_{Al}=0,15\left(mol\right)\)
\(\Rightarrow V_{H_2\left(LT\right)}=0,15.24,79=3,7185\left(l\right)\)
\(\Rightarrow H=\dfrac{V_{H_2\left(TT\right)}}{V_{H_2\left(LT\right)}}.100\%=\dfrac{2,479}{3,7185}.100\%\approx66,67\%\)
b, \(n_{HCl}=\dfrac{6}{2}n_{Al}=0,3\left(mol\right)\)
\(\Rightarrow V_{HCl}=\dfrac{n_{HCl}}{C_{M_{HCl}}}=\dfrac{0,3}{1,5}=0,2\left(l\right)\)
c, \(n_{AlCl_3}=n_{Al}=0,1\left(mol\right)\)
\(\Rightarrow m_{AlCl_3}=n_{AlCl_3}.M_{AlCl_3}=0,1.133,5=13,35\left(g\right)\)