1,66g hh nha
a,
2Al+ 3H2SO4\(\rightarrow\) Al2(SO4)3+ 3H2
Fe+ H2SO4\(\rightarrow\) FeSO4+ H2
b,
nH2= \(\frac{1,12}{22,4}\)= 0,05 mol
Đặt nAl= x, nFe= y \(\left\{{}\begin{matrix}\text{ 27x+ 56y= 1,66}\\\text{1,5x+ y= 0,05 }\end{matrix}\right.\rightarrow\text{x= y= 0,02 }\)
\(\rightarrow\) mAl= 0,02.27= 0,54g
\(\rightarrow\) %Al= \(\frac{\text{0,54.100}}{1,66}\)= 32,53%
\(\rightarrow\)%Fe= 67,47%