a)2Al +6HCl---->2AlCl3 +3H2(1)
x--------------------------------1,5x
Fe +2HCl--->FeCl2 +H2(2)
y-------------------------y
b)
Ta có
n\(_{H2}=\frac{8,96}{22,4}=0,4\left(mol\right)\)
Theo bài ra ta có
\(\left\{{}\begin{matrix}27x+56y=11\\1,5x+y=0,4\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=0,2\\y=0,1\end{matrix}\right.\)
%m\(_{Al}=\frac{0,2.27}{11}.100\%=49\%\)
%m\(_{Fe}=100-49=51\%\)
c) Theo pthh
n\(_{HCl}=2n_{H2}=0,8\left(mol\right)\)
C%=\(\frac{0,8.36,5}{200}.100\%=14,6\%\)
Chúc bạn học tốt