Ta có: \(\left\{{}\begin{matrix}m_{Fe}=\dfrac{59,2+8}{2}=33,6\left(g\right)\\m_{Cu}=59,2-33,6=25,6\left(g\right)\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}n_{Fe}=\dfrac{33,6}{56}=0,6\left(mol\right)\\n_{Cu}=\dfrac{25,6}{64}=0,4\left(mol\right)\end{matrix}\right.\)
PTHH:
\(Fe_3O_4+4H_2\xrightarrow[]{t^o}3Fe+4H_2O\)
0,8<----0,3
\(CuO+H_2\xrightarrow[]{t^o}Cu+H_2O\)
0,4<---0,4
`=> V_{H_2} = (0,4 + 0,8).22,4 = 26,88 (l)`