ZnO + H2 --to--➢ Zn + H2O
\(n_{ZnO}=\dfrac{28,35}{81}=0,35\left(mol\right)\)
a) Theo PT: \(n_{H_2}=n_{ZnO}=0,35\left(mol\right)\)
\(\Rightarrow V_{H_2}=0,35\times22,4=7,84\left(l\right)\)
b) Theo PT: \(n_{Zn}=n_{ZnO}=0,35\left(mol\right)\)
\(\Rightarrow m_{Zn}=0,35\times65=22,75\left(g\right)\)
\(n_{ZnO}=\dfrac{28,35}{81}=0,35\left(mol\right)\)
\(PTHH:ZnO+H_2\underrightarrow{t^o}Zn+H_2O\)
Theo PTHH: \(n_{H_2}=n_{Zn}=n_{ZnO}=0,35\left(mol\right)\)
\(\Rightarrow V_{H_2}=0,35.22,4=7,84\left(l\right)\)
\(\Rightarrow m_{Zn}=0,35.65=22,75\left(g\right)\)