nZn = 1.95/65= 0.03 mol
Zn + 2HCl --> ZnCl2 + H2
0.03________________0.03
CuO + H2 -to-> Cu + H2O
_____0.03____0.03
mCu = 0.03*64 = 1.92g
\(n_{Zn}=\frac{1,95}{65}=0,03mol\)
PTHH : \(Zn+2HCl\rightarrow ZnCl_2+H_2\uparrow\) (1)
\(CuO+H_2\underrightarrow{to}Cu+H_2O\) (2)
Theo PTHH ( 1 ) ; (2) => \(n_{Cu}=0,03mol\Rightarrow m_{Cu}=0,03.64=1,92g\)
Zn + 2HCl → ZnCl2 + H2 (1)
H2 + CuO \(\underrightarrow{to}\) Cu + H2O (2)
\(n_{Zn}=\frac{1,95}{65}=0,03\left(mol\right)\)
Theo PT1: \(n_{H_2}=n_{Zn}=0,03\left(mol\right)\)
Theo pT2: \(n_{Cu}=n_{H_2}=0,03\left(mol\right)\)
\(\Rightarrow m_{Cu}=0,03\times64=1,92\left(g\right)\)
Zn + 2HCl \(\rightarrow\) ZnCl2 + H2
nZn = \(\frac{1,95}{65}\) = 0,03 mol
Theo PT trên, ta có:
nZn = n\(H_2\) = 0,03 mol
H2 + CuO → Cu + H2O
Theo PT trên, ta có:
n\(H_2\) = nCu = 0,03 mol
mCu = 0,03.64=1,92 g