\(Fe+2HCl-->FeCl2+H2\)
\(2Al+6HCl-->2AlCl4+3H2\)
\(n_{H2}=\frac{4,48}{22,4}=0,2\left(mol\right)\Rightarrow m_{H2}=0,4\left(g\right)\)
\(n_{HCl}=2n_{H2}=0,4\left(mol\right)\)
\(m_{HCl}=0,4.36,5=14,6\left(g\right)\)
\(m_{muối}=m_{hh}+m_{HCl}-m_{H2}-m_{cr}=11,9+14,6-0,4-6,4=19,7\left(g\right)\)