\(n_{Zn}=\dfrac{9,75}{65}=0,15(mol)\\ Zn+2HCl\to ZnCl_2+H_2\\ \Rightarrow n_{H_2}=0,15(mol)\\ \Rightarrow V_{H_2}=0,15.22,4=3,36(l)\)

$PTHH:Zn+2HCl\to ZnCl_2+H_2\uparrow$

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

Theo PT: $n_{ZnCl_2}=n_{H_2}=0,2(mol);n_{HCl}=0,4(mol)$

$a)m_{axit}=m_{HCl}=n.M=0,4.36,5=14,6(g)$

$b)m_{ZnCl_2}=n.M=0,2.136=27,2(g)$

$c)V_{H_2(đktc)}=n.22,4=0,2.22,4=4,48(lít)$

Số mol kẽm là : 

\(n=\dfrac{m}{M}=\dfrac{13}{65}=0,2\left(mol\right)\)

PTHH : Zn + 2HCL -> ZnCl₂ + H₂

1 2 1 1 

0,2 mol -> 0,4 mol 0,2 mol 0,2 mol 

a, Khối lượng HCL là : 

\(m=n.M=0,4.35,5=14,2\left(g\right)\)

b, Khối lượng ZnCL₂ là : 

\(m=n.M=0,1.136=13,6\left(g\right)\)

c, Thể tích H₂ là : V = n . 22,4 = \(0,1.22,4=2,24\left(l\right)\)

\(n_{Zn}=\dfrac{6,5}{65}=0,1(mol)\\ Zn+2HCl\to ZnCl_2+H_2\\ \Rightarrow n_{H_2}=0,1(mol);n_{HCl}=0,2(mol)\\ a,V_{H_2}=0,1.22,4=2,24(l)\\ b,m_{HCl}=0,2.36,5=7,3(g)\)

a, PT: \(Zn+2HCl\rightarrow ZnCl_2+H_2\)

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

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

\(\Rightarrow V_{H_2}=0,2.22,4=4,48\left(l\right)\)

b, Theo PT: \(n_{HCl}=2n_{Zn}=0,4\left(mol\right)\)

\(\Rightarrow m_{HCl}=0,4.36,5=14,6\left(g\right)\)

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

+\(n_{Zn}=\dfrac{32,5}{65}=0,5\left(mol\right)\)

+\(nH_2=n_{Zn}=0,5\left(mol\right)\)

+\(n_{HCl}=2n_{Zn}=1\left(mol\right)\)

+\(V_{H2}=0,5.22,4=11,2\left(lit\right)\)

\(m_{HCl}=1.36,5=36,5\left(gam\right)\)

\(n_{Zn}=\dfrac{m}{M}=\dfrac{32,5}{65}=0,5\left(mol\right)\)

   \(Zn\)          \(+\)    \(2\)\(HCl\)     →    \(ZnCl_2\)      \(+\)     \(H_2\)

\(0,5\) \(mol\)    →   \(1\) ​\(mol\)​    →       \(0,5\)\(mol\)    →   \(0,5\) \(mol\)

\(V_{H_2}=n.22,4=0,5.22,4=11,2\left(l\right)\)

\(m_{HCl}=n.M=1.36,5=36,4\left(g\right)\)

Theo gt ta có: $n_{Zn}=0,1(mol)$

a, $Zn+2HCl\rightarrow ZnCl_2+H_2$

b, Ta có: $n_{H_2}=0,1(mol)\Rightarrow V_{H_2}=2.24(l)$

c, Ta có: $n_{HCl}=2.n_{Zn}=0,2(mol)\Rightarrow m_{HCl}=7,3(g)$

\(a)\\ Zn + 2HCl \to ZnCl_2 + H_2\\ b)\\ n_{H_2} = n_{Zn} = \dfrac{6,5}{65} = 0,1(mol)\\ \Rightarrow V_{H_2} = 0,1.22,4 = 2,24(lít)\\ c)\\ n_{HCl} = 2n_{Zn} = 0,1.2 = 0,2(mol)\\ \Rightarrow m_{HCl} = 0,2.36,5 = 7,3\ gam\)

`Zn + 2HCl -> ZnCl_2 + H_2 \uparrow`

`0,25`  `0,5`                         `0,25`           `(mol)`

`n_[Zn]=[16,5]/65=0,25(mol)`

`a)m_[HCl]=0,5.36,5=18,25(g)`

`b)V_[H_2]=0,25.22,4=5,6(l)`

a) PTPU

Theo pt: nH2 = nFe = 0,05 (mol)

VH2 = 22,4.n = 22,4.0,05 = 1,12 (l)

b) nHCl = 2.nFe = 2. 0,05 = 0,1 (mol)

mHCl = M.n = 0,1.36,5 = 3,65 (g)