Ta có:
\(\left\{{}\begin{matrix}n_{Fe}=\frac{5,6}{56}=0,1\left(mol\right)\\n_S=\frac{1,6}{32}=0,05\left(mol\right)\end{matrix}\right.\)
\(PTHH:Fe+S\rightarrow FeS\)
Tỉ lệ : \(\frac{0,1}{1}>\frac{0,05}{1}\)
\(n_{FeS}=n_S=0,05\left(mol\right)\Rightarrow m_{FeS}=0,05.88=4,4\left(g\right)\)
\(n_{Fe\left(spu\right)}=0,05\left(mol\right)\)
PTHH:
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
0,05____________0,05_______
\(FeS+2HCl\rightarrow FeCl_2+H_2S\)
0,05____________0,05________
\(\Rightarrow\%V_{H2}=\%V_{H2S}=50\%\)
\(M_{hh}=18\Rightarrow d_{hh/O2}=\frac{18}{32}=0,5625\)