a, Fe+ 2HCl \(\rightarrow\) FeCl2+ H2
b,
nH2= \(\frac{4,48}{22,4}\)= 0,2 mol= nFe= nFeCl2
\(\rightarrow\)mFe= 0,2.56= 11,2g
%Fe= \(\frac{\text{ 11,2.100}}{17,6}\) 63,6%
%Cu= 36,4%
c,
nHCl= 0,4 mol
mdd HCl= \(\frac{\text{ 0,4.36,5.100}}{25}\)= 58,4g
d,
mdd spu= 11,2+ 58,4- 0,2.2= 69,2g
C% FeCl2= \(\frac{\text{0,2.127.100}}{69,2}\) 36,7%