Ta có: \(n_{Zn}=\dfrac{13}{65}=0,2\left(mol\right)\)

PT: \(Zn+2HCl\rightarrow ZnCl_2+H_2\)

a, n_H2 = n_Zn = 0,2 (mol)

⇒ V_H2 = 0,2.24,79 = 4,958 (l)

b, n_ZnCl2 = n_Zn = 0,2 (mol)

⇒ m_ZnCl2 = 0,2.136 = 27,2 (g)

c, \(H=\dfrac{3,225}{4,958}.100\%\approx65,05\%\)

a)

\(PTHH:Zn+2HCl\rightarrow ZnCl_2+H_2\uparrow\)

b)

\(n_{Zn}=\dfrac{13}{65}=0,2\left(mol\right)\)

Theo PT:\(n_{H_2}=n_{Zn}=0,2mol\)

\(\Rightarrow V_{H_2}=0,2.24,79=4,958l\)

a, \(Zn+2HCl\rightarrow ZnCl_2+H_2\)

b, \(n_{Zn}=\dfrac{13}{65}=0,2\left(mol\right)\)

Theo PT: \(n_{H_2}=n_{Zn}=0,2\left(mol\right)\)

\(\Rightarrow V_{H_2}=0,2.24,79=4,958\left(l\right)\)

$a)$

PTHH : $Zn+2HCl\to ZnC{l}_2+H_2\uparrow$

$b)$

$n_{Zn}=\frac{13}{65}=0,2$ $mol$

Theo phương trình : $n_{H_2}=n_{Zn}=0,2$ $mol$

$\Rightarrow V_{H_2}=0,2.24,79=4,958$ $l$

\(a)Zn+2HCl\rightarrow ZnCl_2+H_2\\ b)n_{Zn}=\dfrac{6,5}{65}=0,1mol\\ Zn+2HCl\rightarrow ZnCl_2+H_2\)
0,1      0,2             0,1             0,1

\(m_{ZnCl_2}=0,1.136=13,6g\\ c)V_{H_2}=0,1.24,79=2,479l\\ d)C_{\%HCl}=\dfrac{0,2.36,5}{200}\cdot100\%=3,65\%\)

a) \(n_{Zn}=\dfrac{6,5}{65}=0,1\left(mol\right)\)

PTHH: \(Zn+2HCl\rightarrow ZnCl_2+H_2\)

           0,1-------------->0,1------>0,1

\(\Rightarrow m_{ZnCl_2}=0,1.136=13,6\left(g\right)\)

b) \(V_{H_2}=0,1.22,4=2,24\left(l\right)\)

c) \(CuO+H_2\xrightarrow[]{t^o}Cu+H_2O\)

     0,1<---0,1

\(\Rightarrow m_{CuO}=0,1.80=8\left(g\right)\)

a: Zn+2HCl->ZnCl2+H2

0,2       0,4      0,2       0,2

mZnCl2=0,2*136=27,2(g)

b: V=0,2*22,4=4,48(lít)

46,4 g oxit nào

46,4 gam gì vậy bạn ( câu b ý )

Câu c chất rắn là gì vậy bạn?

a) 2Al + 6HCl -> 2AlCl3 + 3H2

b)nAl = 2.7/27=0.1mol

2Al + 6HCl -> 2AlCl3 + 3H2

(mol) 0.1 0.3 0.1 0.15

VH2 = 0.15*22.4=3.36l

mAlCl3= 0.1*133.5=13.35g

=>C%=\(\dfrac{13,35}{500+27}100=2,533\%\)

Cu không phản ứng với dung dịch HCl

\(Zn + 2HCl \to ZnCl_2 + H_2\\ n_{Zn} = n_{H_2} =\dfrac{2,24}{22,4} = 0,1(mol)\\ m_{Zn} = 0,1.65 = 6,5(gam)\\ m_{Cu} = 9,6 - 6,5 = 3,1(gam)\)