a, PT: \(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)
\(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
b, Ta có: \(m_{Fe_2O_3}=50.80\%=40\left(g\right)\Rightarrow n_{Fe_2O_3}=\dfrac{40}{160}=0,25\left(mol\right)\)
\(\Rightarrow m_{CuO}=10\left(g\right)\Rightarrow n_{CuO}=\dfrac{10}{80}=0,125\left(mol\right)\)
Theo PT: \(\left\{{}\begin{matrix}n_{Cu}=n_{CuO}=0,125\left(mol\right)\\n_{Fe}=2n_{Fe_2O_3}=0,5\left(mol\right)\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}m_{Cu}=0,125.64=8\left(g\right)\\m_{Fe}=0,5.56=28\left(g\right)\end{matrix}\right.\)
b, Theo PT: \(n_{H_2}=n_{CuO}+3n_{Fe_2O_3}=0,875\left(mol\right)\)
\(\Rightarrow V_{H_2}=0,875.22,4=19,6\left(l\right)\)
Bạn tham khảo nhé!
