Sửa đề: 0,5 mol → 0,5 M
a, Ta có: \(n_{Zn}=\dfrac{2,6}{65}=0,04\left(mol\right)\)
PT: \(Zn+2HCl\rightarrow ZnCl_2+H_2\)
Theo PT: \(n_{HCl}=2n_{Zn}=0,08\left(mol\right)\)
\(\Rightarrow V_{HCl}=\dfrac{0,08}{0,5}=0,16\left(l\right)\)
b, Theo PT: \(n_{H_2}=n_{Zn}=0,04\left(mol\right)\Rightarrow V_{H_2}=0,04.22,4=0,896\left(l\right)\)
Sửa đề 0,5mol ⇒ 0,5M
\(n_{Zn}=\dfrac{2,6}{65}=0,04\left(mol\right)\)
Pt : \(Zn+2HCl\rightarrow ZnCl_2+H_2\uparrow\)
0,04 0,08 0,04
a) \(V_{ddHCl}=\dfrac{0,08}{0,5}=0,16\left(l\right)\)
b) \(V_{H2\left(dktc\right)}=0,04.22,4=0,896\left(l\right)\)
Chúc bạn học tốt
sửa đề HCl 0,5M
\(a.n_{Zn}=\dfrac{2,6}{65}=0,04mol\\Zn+2HCl\rightarrow ZnCl_2+H_2 \)
0,04 0,08 0,04 0,04
\(V_{HCl}=\dfrac{0,08}{0,5}=0,16l\\ b.V_{H_2}=0,04.22,4=0,896l\)