\(m_{Zn}=60,5-28=32,5g\\ n_{Fe}=\dfrac{28}{56}=0,5\left(mol\right)\\ n_{Zn}=\dfrac{32,5}{65}=0,5\left(mol\right)\\ pthh:Zn+2HCl\rightarrow ZnCl_2+H_2\) 
           0,5                    0,5               0,5 
          \(Fe+2HCl\rightarrow FeCl_2+H_2\) 
            0,5                     0,5        0,5 
\(V_{H_2}=\left(0,5+0,5\right).22,4=22,4\left(L\right)\\ m_{Mu\text{ối}}=\left(0,5.136\right)+\left(0,5.127\right)=131,5g\)

a) mFe= 46,289% x 60,5 \(\approx\) 28(g)

mZn=60,5 - 28= 32,5(g)

b) nFe= 28/56=0,5(mol)

nZn=32,5/65=0,5(mol)

PTHH: Fe + 2 HCl -> FeCl2 + H2

0,2_________0,4____0,2____0,2(mol)

Zn + 2 HCl -> ZnCl2 + H2

0,2___0,4___0,2____0,2(mol)

V(H2, tổng đktc)= (0,2+0,2).22,4=8,96(l)

c) m(muối)=mFeCl2+ mZnCl2= 0,2.127 + 0,2. 136= 52,6(g)

\(n_{HCl}=1,5.0,1=0,15(mol)\\ Fe=2HCl\to FeCl_2+H_2\\ \Rightarrow n_{H_2}=n_{Fe}=0,075(mol)\\ a,V_{H_2}=0,075.22,4=1,68(l)\\ b,\%_{Fe}=\dfrac{0,075.56}{6}.100\%=70\%\\ \Rightarrow \%_{Cu}=100\%-70\%=30\%\)

a) Ta có: m_Fe = \(\frac{60,5.46,289}{100}\) \(\approx\) 28g

\(\Rightarrow\) m_Zn = 60,5 - 28 = 32,5g

b) PTPỨ: Zn + 2HCl \(\rightarrow\) ZnCl₂ + H₂ (1)

                  Fe + 2HCl \(\rightarrow\) FeCl₂ + H₂ (2)

Theo ptr (1): n_{H2 (1)} = n_Zn = \(\frac{32,5}{65}\)= 0,5 mol

Theo ptr (2) : n _{H2 (2)} = n_Fe = \(\frac{28}{56}\) = 0,5 mol

\(\Rightarrow\) V_H2 = (n_{H2 (1)} + n_{H2 (2)} ) . 22,4 = (0,5 + 0,5).22,4=22,4 lít

c) Theo (1): n_ZnCl2 = n_Zn = 0,5 mol

\(\Rightarrow\) m_ZnCl2 = 0,5.136 = 68(g)

Theo (2): nFeCl2 = n_Fe = 0,5 mol

\(\Rightarrow\) m_FeCl2 = 0,5 . 127 = 63,5 g

Zn+2HCl\(\rightarrow\)ZnCl₂+H₂\(\uparrow\)

1 2 1 1 (mol)

0.5 (mol)

Fe+2HCl\(\rightarrow\)FeCl₂+H₂\(\uparrow\)

1 2 1 1 (mol)

0.5 (mol)

mFe=60.5\(\times\)46,289=28(g)

nFe=\(\dfrac{m}{M}\)=\(\dfrac{28}{56}\)=0.5(mol)

mZn=60.5-28=32.5(g)

nZn=\(\dfrac{m}{M}\)=\(\dfrac{32.5}{65}\)=0.5(mol)

nH₂₍₁₎=\(\dfrac{0.5\times1}{1}\)=0.5(mol)

nH₂₍₂₎=\(\dfrac{0.5\times1}{1}\)=0.5(mol)

nH_2(1,2)=0.5+0.5=1 (mol)

VH₂=1\(\times\)22.4=22.4(l)

nZnCl₂=0.5 (mol)

mZnCl₂=0.5\(\times\)136=68(g)

nFeCl₂=0.5(mol)

mFeCl₂=0.5\(\times\)127=63.5(g)

Do Zn và Fe có số mol bằng nhau:

\(\rightarrow n_{Zn}=n_{Fe}=\dfrac{1}{2}=0,5\left(mol\right)\)

PTHH:

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

0,5                                   0,5

\(Fe+2HCl\rightarrow FeCl_2+H_2\)

0,5                                 0,5

\(m_{Fe}=0,5.56=28\left(g\right)\)

\(m_{Zn}=0,5.65=32,5\left(g\right)\)

\(c,V_{H_2}=\left(0,5+0,5\right).24,79=24,79\left(l\right)\)

Khối lượng sắt:mFe=0,46298*60,5=28 g=>mZn=32,5g

=>nFe=0,5;nZn=0,5

ta có:nCl- =2nFe+2nZn=2 mol =>nHCl=2mol

=>nH2 =1mol.=>V H2=44,8 lit

m muối =m kim loại +m Cl- =60,5 +2*35,5=131,5

131,5 tích nha

a/ Fe + 2HCl \(\rightarrow\) FeCl₂ + H₂

n_H2 = \(\dfrac{3,36}{22,4}=0,15\left(mol\right)\)

Theo PTHH: n_H2 = n_Fe = 0,15 (mol) \(\Rightarrow m_{Fe}=0,15.56=8,4\left(g\right)\)

\(\Rightarrow m_{Cu}=11-8,4=2,6\left(g\right)\)

\(\Rightarrow\%m_{Fe}=\dfrac{8,4}{11}.100\%\approx76,4\%\)

\(\Rightarrow\%m_{Cu}=100-76,4\approx23,6\%\)

b/ Theo PTHH ta có: n_HCl = 2n_Fe = 2.0,15 = 0,3 (mol)

\(\Rightarrow V_{ddHCl}=\dfrac{0,3}{2}=0,15\left(M\right)\)

c/ m_HCl = 36,5 . 0,3 = 10,95(g)

\(\Rightarrow C\%_{HCl}=\dfrac{m_{HCl}}{m_{ddHCl}}.100\%=\dfrac{10,95}{200}.100\%=5,475\%\)

a, PT: \(Fe+2HCl\rightarrow FeCl_2+H_2\)

Ta có: \(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)

Theo PT: \(n_{Fe}=n_{H_2}=0,15\left(mol\right)\)

\(\Rightarrow\left\{{}\begin{matrix}\%m_{Fe}=\dfrac{0,15.56}{11}.100\%\approx76,36\%\\\%m_{Cu}\approx23,64\%\end{matrix}\right.\)

b, Theo PT: \(n_{HCl}=2n_{H_2}=0,3\left(mol\right)\)

\(\Rightarrow V_{ddHCl}=\dfrac{0,3}{2}=0,15\left(l\right)\)

c, \(C\%_{HCl}=\dfrac{0,3.36,5}{200}.100\%=5,475\%\)