a)
FeO + H2 --to--> Fe + H2O
CuO + H2 --to--> Cu + H2O
b) \(n_{Cu}=\dfrac{6,4}{64}=0,1\left(mol\right)\)
PTHH: CuO + H2 --to--> Cu + H2O
0,1<--0,1<-----0,1
=> \(m_{FeO}=12-0,1.80=4\left(g\right)\)
=> \(n_{FeO}=\dfrac{4}{72}=\dfrac{1}{18}\left(mol\right)\)
FeO + H2 --to--> Fe + H2O
\(\dfrac{1}{18}\)-->\(\dfrac{1}{18}\)----->\(\dfrac{1}{18}\)
=> \(V_{H_2}=\left(0,1+\dfrac{1}{18}\right).22,4=\dfrac{784}{225}\left(l\right)\)
c) \(m_{Fe}=\dfrac{1}{18}.56=\dfrac{28}{9}\left(g\right)\)
d) \(\left\{{}\begin{matrix}m_{CuO}=0,1.80=8\left(g\right)\\m_{FeO}=4\left(g\right)\end{matrix}\right.\)