nCu= 19.2/64=0.3 mol
CuO + H2 -to-> Cu + H2O
0.3___0.3_____0.3
mCuO= 0.3*80=24g
VH2= 0.3*22.4=6.72l
a) PTHH
CuO + H2 --to--> Cu + H2O
b) Ta có : \(m_{Cu}=19,2\left(g\right)\Rightarrow n_{Cu}=\frac{m}{M}=\frac{19,2}{64}=0,3\left(mol\right)\)
PTHH
CuO + H2 --to--> Cu + H2O
..0,3....0,3.............0,3.....0,3...(mol)
\(m_{CuO}=n\cdot M=0,3\cdot80=24\left(g\right)\)
\(V_{H2}=n\cdot22,4=0,3\cdot22,4=6,72\left(l\right)\)
a) PTHH: CuO + H2 \(\underrightarrow{t^o}\) Cu + H2O
b) nCu = \(\frac{19,2}{64}=0,3\left(mol\right)\)
Theo PT: nCuO = n\(H_2\) = nCu = 0,3 (mol)
=> mCuO = 0,3.80 = 24 (g)
=> V\(H_2\) = 0,3.22,4 = 6,72 (l)