\(n_{Zn}=\frac{m}{M}=\frac{6,5}{65}=0,1\left(mol\right)\)
\(PTHH:Zn+2HCl\rightarrow ZnCl_2+H_2\uparrow\)
(mol) 1 2 1 1
(mol) 0,1 0,2 0,1 0,1
\(a.V_{H_2}=n.22,4=0,1.22,4=2,24\left(l\right)\)
\(b.V_{ddM}=?\)
\(c.C_{M_{ddHCl}}=\frac{n}{V}=\frac{0,1}{0,2}=0,5\left(M\right)\)
Zn + 2HCl --> ZnCl2 + H2
a) nZn = \(\frac{6,5}{65}=0,1\) mol
Theo PTHH, ta có: n\(H_2\) = 0,1 mol
V\(H_2\) = 0,1 . 22,4 = 2,24 l (đktc)
b) Đổi: 100ml = 0,1 l
Theo PTHH, ta có:
n\(ZnCl_2\) = 0,1 mol
CM dd sau pư = \(\frac{0,1}{0,1}=1\) M
c) Theo PTHH, ta có:
nHCl = 0,1.2 = 0,2 mol
CM dd HCl = \(\frac{0,2}{0,1}\) = 2 M
Zn + 2HCl → ZnCl2 + H2
\(n_{Zn}=\frac{6,5}{65}=0,1\left(mol\right)\)
a) Theo pt: \(n_{H_2}=n_{Zn}=0,1\left(mol\right)\)
\(\Rightarrow V_{H_2}=0,1\times22,4=2,24\left(l\right)\)
b) Theo PT: \(n_{ZnCl_2}=n_{Zn}=0,1\left(mol\right)\)
\(\Rightarrow C_{M_{ZnCl_2}}=\frac{0,1}{0,1}=1\left(M\right)\)
c) Theo PT: \(n_{HCl}=2n_{Zn}=2\times0,1=0,2\left(mol\right)\)
\(\Rightarrow C_{M_{HCl}}=\frac{0,2}{0,1}=2\left(M\right)\)