Fe+2HCl--->FeCl2+H2
x____2x______x
2Al+6HCl--->2AlCl3+3H2
y____3y_______y
Hệ pt:
\(\left\{{}\begin{matrix}56x+27y=11\\127x+133,5y=39,4\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=0,1\\y=0,2\end{matrix}\right.\)
=>mFe=0,1.56=5,6(g)
=>mAl=11-5,6=5,4(g)
\(\Sigma nHCl=2x+3y=\)2.0,1+3.0,2=0,8(mol)