PTHH: \(CuO+H_2\rightarrow Cu+H_2O\\ 0,15mol:0,15mol\leftarrow0,15mol:0,15mol\)
\(Fe_2O_3+3H_2\rightarrow2Fe+3H_2O\\ 0,04375mol:0,13125mol\leftarrow0,0875mol:0,13125mol\)
\(m_{Cu}=23,6-14=9,6\left(g\right)\)
\(\left\{{}\begin{matrix}n_{Cu}=\dfrac{9,6}{64}=0,15\left(mol\right)\\m_{Fe_2O_3}=\dfrac{14}{160}=0,0875\left(mol\right)\end{matrix}\right.\)
\(n_{O_2}=0,15+0,13125=0,28125\left(mol\right)\)
\(V_{H_2}=0,28125.22,4=6,3\left(l\right)\)