- HCl

\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)

\(Mg+2HCl\rightarrow MgCl_2+H_2\)

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

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

- H₂SO₄

\(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)

\(Mg+H_2SO_4\rightarrow MgSO_4+H_2\)

\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)

\(Zn+H_2SO_4\rightarrow ZnSO_4+H_2\)

\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)

\(2Al+3H_2SO_4_{loãng}\rightarrow Al_2\left(SO_4\right)_3+3H_2\)

\(Mg+2HCl\rightarrow MgCL_2+H_2\)

\(Mg+H_2SO_4\rightarrow MgSO_4+H_2\)

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

\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)

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

\(Zn+H_2SO_4\rightarrow ZnSO_4+H_2\)

2Al+6HCl->2AlCl₃+3H₂

2Al+3H₂SO₄->Al₂(SO₄)₃+3H₂

Mg+2HCl->MgCl₂+H₂

Mg+H₂SO₄->MgSO₄+H₂

Fe+2HCl->FeCl₂+H₂

Fe+H₂SO₄->FeSO₄+H₂

Zn+2HCl->ZnCl₂+H₂

Zn+H₂SO₄->ZnSO₄+H₂

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\(2Al+6H_2SO_{4\left(đ\right)}\xrightarrow[]{t^o}Al_2\left(SO_4\right)_3+3SO_2+6H_2O\)

\(2Fe+6H_2SO_{4\left(đ\right)}\xrightarrow[]{t^o}Fe_2\left(SO_4\right)_3+3SO_2+6H_2O\)

\(2Ag+2H_2SO_{4\left(đ\right)}\xrightarrow[]{t^o}Ag_2SO_4+SO_2+2H_2O\)

\(2Fe\left(OH\right)_2+4H_2SO_{4\left(đ\right)}\xrightarrow[]{t^o}Fe_2\left(SO_4\right)_3+SO_2+6H_2O\)

\(2FeCO_3+4H_2SO_{4\left(đ\right)}\xrightarrow[]{t^o}Fe_2\left(SO_4\right)_3+SO_2+2CO_2+4H_2O\)

\(2FeSO_4+2H_2SO_{4\left(đ\right)}\xrightarrow[]{t^o}Fe_2\left(SO_4\right)_3+SO_2+2H_2O\)

Cái kclo4 mình ko bt

Fe + 2HCl --> FeCl₂ + H₂

2Al + 6HCl --> 2AlCl₃ + 3H₂

Mg + 2HCl --> MgCl₂ + H₂

Zn + 2HCl --> ZnCl₂ + H₂

Fe + H₂SO₄ --> FeSO₄ + H₂

2Al + 3H₂SO₄ --> Al₂(SO₄)₃ + 3H₂

Mg + H₂SO₄ --> MgSO₄ + H₂

Zn + H₂SO₄ --> ZnSO₄ + H₂

\(\text{Em sửa 7,1 thành 8,1g nha}\\ a/ 2Al+3H_2SO_4 \rightarrow Al_2(SO_4)_3+3H_2\\ b/ \\ n_{Al}=0,3mol\\ n_{H_2SO_4}=\frac{3}{2}n_{Al}=\frac{3}{2}.0,3=0,45mol V_{H_2SO_4}=\frac{0,45}{0,05}=9M\\ c/ \\ V_{H_2}=0,45.22,4=10,08l\)

a)\(n_{Al}=\dfrac{7,1}{27}\approx0,26\left(mol\right)\)

PTHH:\(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)

          0,26----->0,39-------->0,13------->0,39 (mol)

b)\(V_{H_2SO_4}=0,39\cdot22,4=8,736\left(l\right)\)

c)\(V_{H_2}=0,39\cdot22,4=8,736\left(l\right)\)

\(a.2Al+3H2SO4\rightarrow Al2\left(SO4\right)3+3H2\)

b)\(n_{Al}=\dfrac{7,1}{27}=\dfrac{71}{270}\left(mol\right)\)

\(n_{H2SO4}=\dfrac{3}{2}n_{Al}=\dfrac{71}{180}\left(mol\right)\)

\(\Rightarrow V=\dfrac{71}{180}:0,05=\dfrac{71}{9}\left(l\right)\)

c)\(n_{H2}=\dfrac{3}{2}n_{Al}=\dfrac{71}{180}\left(mol\right)\)

\(V_{H2}=\dfrac{71}{180}.22,4=\dfrac{476}{225}\left(l\right)\)

a)

\(Mg + 2HCl \to MgCl_2 + H_2\\ 2Al + 6HCl \to 2AlCl_3 + 3H_2\\ Fe + 2HCl \to FeCl_2 + H_2\\ Zn + 2HCl \to ZnCl_2 + H_2\)

b)

Gọi : \(n_{H_2} = a(mol) \Rightarrow n_{HCl} = 2a\)

Bảo toàn khối lượng :

\(13,5 + 2a.36,5 = 66,75 + 2.a\\ \Rightarrow a = 0,75\\ \Rightarrow V = 0,75.22,4 = 16,8(lít)\)

a) Mg + 2 HCl -> MgCl2  + H2

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

Fe + 2 HCl ->  FeCl2 + H2

Zn + 2 HCl -> ZnCl2 + H2

b) mY-mX=mCl

<=> mCl= 66,75-13,5=53,25(g)

=>nCl=53,25/35,5=1,5(mol)

=> nH2= nCl/2= 1,5/2=0,75(mol)

=>V=V(H2,đktc)=0,75.22,4=16,8(l)

Fe + 2HCl -> FeCl2 + H2

Mg + 2HCl -> MgCl2 + H2

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

Fe + H2SO4 -> FeSO4 + H2

Mg + H2SO4 -> MgSO4 + H2

2Al + 3H2(SO4)3 -> Al2(SO4)3 + 3H2

Tất cả đều là phản ứng thế

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

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

\(Mg+2HCl\rightarrow MgCl_2+H_2\)

\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)

\(Zn+H_2SO_4\rightarrow ZnSO_4+H_2\)

\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)

\(Mg+H_2SO_4\rightarrow MgSO_4+H_2\)

\(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)

\(C+O_2\xrightarrow[]{t^o}CO_2\)

\(S+O_2\xrightarrow[]{t^o}SO_2\)

\(4P+5O_2\xrightarrow[]{t^o}2P_2O_5\)

\(H_2+\dfrac{1}{2}O_2\xrightarrow[]{t^o}H_2O\)

\(4Na+O_2\rightarrow2Na_2O\)

\(Mg+\dfrac{1}{2}O_2\xrightarrow[]{t^o}MgO\)

\(4Al+3O_2\xrightarrow[]{t^o}2Al_2O_3\)

\(3Fe+2O_2\xrightarrow[]{t^o}Fe_3O_4\)

\(Cu+\dfrac{1}{2}O_2\xrightarrow[]{t^o}CuO\)

\(CH_4+2O_2\xrightarrow[]{t^o}CO_2+2H_2O\)

\(4FeS_2+11O_2\xrightarrow[]{t^o}2Fe_2O_3+8SO_2\)

\(C_2H_6O+3O_2\xrightarrow[]{t^o}2CO_2+3H_2O\)

C+ O2 -to-> CO2

S+ O2 -to-> SO2

2 Cl2 + 7 O2 -to-> 2 Cl2O7

4P +5 O2 -to-> 2 P2O5

4Al + 3 O2 -to-> 2 Al2O3

4 Na+ O2 -to-> 2 Na2O

Mg + 1/2 O2 -to-> MgO

3 Fe +2  O2 -to-> Fe3O4

4 FeS2 + 11 O2 -to,xt-> 8 SO2 + 2 Fe2O3

H2 + 1/2 O2 -to->H2O

2 Ag + 1/2 O2 -to-> Ag2O

C2H6O + 3 O2 -to-> 2 CO2 + 3 H2O

CH4 + 2 O2 -to-> CO2 + 2 H2O

Cu + 1/2 O2 -to-> CuO