Sửa đề: 1,2 (l) → 1,12 (l)
PT: \(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)
Ta có: \(n_{H_2}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\)
Theo PT: \(n_{Cu}=n_{CuO}=n_{H_2}=0,05\left(mol\right)\)
a, \(m_{CuO}=0,05.80=4\left(g\right)\)
b, \(m_{Cu}=0,05.64=3,2\left(g\right)\)
c, PT: \(2H_2+O_2\underrightarrow{t^o}2H_2O\)
Theo PT: \(n_{O_2}=\dfrac{1}{2}n_{H_2}=0,025\left(mol\right)\)
\(\Rightarrow V_{O_2}=0,025.22,4=0,56\left(l\right)\)