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21 tháng 12 2023

Dãy 1 : 

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

\(FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2+2NaCl\)

\(Fe\left(OH\right)_2+H_2SO_4\rightarrow FeSO_4+2H_2O\)

\(FeSO_4+Zn\rightarrow ZnSO_4+Fe\)

Dãy 2 : 

\(2Fe+3Cl_2\xrightarrow[]{t^o}2FeCl_3\)

\(FeCl_3+3KOH\rightarrow Fe\left(OH\right)_3+3KCl\)

\(2Fe\left(OH\right)_3\xrightarrow[]{t^o}Fe_2O_3+3H_2O\)

\(Fe_2O_3+3CO\xrightarrow[]{t^o}Fe+3CO_2\)

Dãy 3 : 

\(2Al+3Cl_2\xrightarrow[]{t^o}2AlCl_3\)

\(AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\)

\(2Al\left(OH\right)_3\xrightarrow[]{t^o}Al_2O_3+3H_2O\)

\(2Al_2O_3\xrightarrow[criolit]{đpnc}4Al+3O_2\)

21 tháng 12 2023

Al td Cl ko nhiệt đâu a

17 tháng 12 2023

a, \(2Al+3O_2\underrightarrow{t^o}2Al_2O_3\)

\(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)

\(AlCl_3+3NaOH\rightarrow3NaCl+Al\left(OH\right)_3\)

\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)

\(Al_2O_3\underrightarrow{đpnc}2Al+\dfrac{3}{2}O_2\)

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

\(Al_2\left(SO_4\right)_3+3Mg\rightarrow3MgSO_4+2Al\)

b, \(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)

\(FeCl_3+3NaOH\rightarrow3NaCl+Fe\left(OH\right)_3\)

\(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)

\(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)

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

\(Mg+FeCl_2\rightarrow MgCl_2+Fe\)

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

20 tháng 12 2019

a) 2Fe+3Cl2--->2FeCl3

FeCl3+3NaOH--->3NaCl+Fe(OH)3

3Fe(OH)3-->Fe2O3+3H2O

Fe2O3+H2---->2Fe+3H2O

Fe+H2SO4---->FeSO4+H2

FeSO4+BaCl2---->FeCl2+BaSO4

b) Fe+2HCl--->FeCl2+H2

FeCl2+AgNO3--->2AgCl+Fe(NO3)2

Fe(NO3)2+2NaOH--->2NaNO3+Fe(OH)2

Fe(OH)2+Na2SO4--->2NaOH+FeSO4

FeSO4+Zn----->ZnSO4+Fe

Fe+.....Ko biết

c)4 Al+3O2--->2Al2O3

Al2O3+3H2SO4--->Al2(SO4)3+3H2O

Al2(SO4)3+3BaCl2---->2AlCl3+3BaCl2

Alcl3+3NaOH--->Al(OH)3+3NaCl

2Al(OH)3--->Al2O3+3H2O

2Al2O3--->4Al+3O2

20 tháng 12 2019

a) 2Fe+3Cl2--->2FeCl3

FeCl3+3NaOH--->3NaCl+Fe(OH)3

3Fe(OH)3-->Fe2O3+3H2O

Fe2O3+H2---->2Fe+3H2O

Fe+H2SO4---->FeSO4+H2

FeSO4+BaCl2---->FeCl2+BaSO4

b) Fe+2HCl--->FeCl2+H2

FeCl2+AgNO3--->2AgCl+Fe(NO3)2

Fe(NO3)2+2NaOH--->2NaNO3+Fe(OH)2

Fe(OH)2+Na2SO4--->2NaOH+FeSO4

FeSO4+Zn----->ZnSO4+Fe

ko có PTHH

c)4 Al+3O2--->2Al2O3

Al2O3+3H2SO4--->Al2(SO4)3+3H2O

Al2(SO4)3+3BaCl2---->2AlCl3+3BaCl2

Alcl3+3NaOH--->Al(OH)3+3NaCl

2Al(OH)3--->Al2O3+3H2O

2Al2O3--->4Al+3O2

21 tháng 12 2021

\(a,2Fe+3Cl_2\xrightarrow{t^o}2FeCl_3\\ FeCl_3+3NaOH\to Fe(OH)_3\downarrow+3NaCl\\ 2Fe(OH)_3\xrightarrow{t^o}Fe_2O_3+3H_2O\\ Fe_2O_3+3CO\xrightarrow{t^o}2Fe+3CO_2\\ Fe+H_2SO_4\to FeSO_4+H_2\\ FeSO_4+BaS\to BaSO_4\downarrow+FeS\\ FeS+2HCl\to FeCl_2+H_2\\ FeCl_2+2AgNO_3\to Fe(NO_3)_2+2AgCl\downarrow\)

\(b,2Al_2O_3\xrightarrow[criolit]{đpnc}4Al+3O_2\\ 2Al+3H_2SO_4\to Al_2(SO_4)_3+3H_2\\ Al_2(SO_4)_3+6NaOH\to 2Al(OH)_3\downarrow+3Na_2SO_4\\ Al(OH)_3+3HNO_3\to Al(NO_3)_3+3H_2O\\ 2Al(NO_3)_3+3Mg\to 3Mg(NO_3)_2+2Al\\ Al+NaOH+H_2O\to NaAlO_2+\dfrac{3}{2}H_2\)

16 tháng 12 2019
https://i.imgur.com/YmmZyx9.jpg
24 tháng 12 2021

a: \(Cu+H_2SO_4->CuSO_4+H_2\)

\(CuSO_4+BaCl_2->CuCl_2+BaSO_4\)

\(2CuCl_2+O_2->2CuO+2Cl_2\)

26 tháng 11 2023

\(a,4Al+3O_2\xrightarrow[t^0]{}2Al_2O_3\\ Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\\ AlCl_3+3AgNO_3\rightarrow Al\left(NO_3\right)_3+3AgCl\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ 2Al\left(OH\right)_3\xrightarrow[t^0]{}Al_2O_3+3H_2O\\ 2Al_2O_3\xrightarrow[đpnc]{criolit}4Al+3O_2\\ b,3Fe+2O_2\xrightarrow[t^0]{}Fe_3O_4\\ Fe_3O_4+8HCl\rightarrow2FeCl_3+FeCl_2+4H_2O\\ FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\\ 2Fe\left(OH\right)_3\xrightarrow[t^0]{}Fe_2O_3+3H_2O\\ Fe_2O_3+3CO\xrightarrow[t^0]{}2Fe+3CO_2\)

\(c,2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\\ Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_4\\ FeCl_3+AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\)

27 tháng 12 2017

Al(OH)3 +H2SO4 --> Al2(SO4)3 + BaCl2 --> AlCl3 + AgNO3 --> Al(NO3)3 + Ba(OH)2 --> Al(OH)3 -to-> Al2O3 + HCl --> AlCl3

Fe(OH2) + H2SO4 --> FeSO4 + BaCl2 --> FeCl2 + AgNO3 --> Fe(NO3)2 + Ba(OH)2 --> Fe(OH)2 +O2 -to-> FeO +HCl--> FeCl2