\(Fe_2O_3\left(a\right)+3H_2\underrightarrow{t^o}2Fe\left(2a\right)+3H_2O\)
\(FeO\left(b\right)+H_2\underrightarrow{t^o}Fe\left(b\right)+H_2O\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
Gọi a,b lần lượt là sm của \(Fe_2O_3,FeO\) trong hh oxit
Ta có: \(\left\{{}\begin{matrix}160a+72b=15,2\\2a+b=0,2\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}a=0,05\\b=0,1\end{matrix}\right.\)
\(\Rightarrow\%m_{Fe_2O_3}=\dfrac{0,05.160.100}{15,2}\approx52,63\%\)
\(\%m_{FeO}=47,37\%\)
b) \(V_{H_2}=0,2.22,4=4,48l\).