a, \(CuO+H_2\rightarrow Cu+H_2O\)
\(PbO+H_2\rightarrow Pb+H_2O\)
\(n_{CuO}=\frac{20}{80}=0,25\left(mol\right)\)
\(n_{PbO}=\frac{11,15}{223}=0,05\left(mol\right)\)
\(\Rightarrow n_{H2}=0,25+0,05=0,3\left(mol\right)\)
\(\Rightarrow V_{H2}=0,3.22,4=6,72\left(l\right)\)
b) Bạn xem lại đề
b)\(Fe2O3+3CO-->2Fe+3CO2\)
0,5---------------1,5-----------1(mol)
\(Fe3O4+4CO-->3Fe+4CO2\)
0,1-----------0,4----------0,3(mol)
\(\sum n_{CO}=1,5+0,4=1,9\left(mol\right)\)
\(V_{CO}=1,9.22,4=42,56\left(l\right)\)
\(\sum n_{Fe}=1+0,3=1,3\left(mol\right)\)
\(m_{Fe}=1,3.56=72,8\left(g\right)\)