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19 tháng 7 2017

Fe2O3+3H2->2Fe+3H2O

Fe+2HCl->FeCl2+H2

FeCl2+2NaOH->Fe(OH)2+2NaCl

Fe(OH)2+MgSO4->FeSO4+Mg(OH)2

2FeCl2+Cl2->2FeCl3

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

2Fe(OH)3->Fe2O3+H2O

19 tháng 7 2017

Viết các PTHH theo chuỗi phản ứng.

\(\left(1\right)Fe_2O_3+3H_2\rightarrow2Fe+3H_2O\)

\(\left(2\right)Fe+2HCl\rightarrow FeCl_2+H_2\uparrow\)

\(\left(3\right)FeCl_2+Ba\left(OH\right)_2\rightarrow Fe\left(OH\right)_2\downarrow+BaCl_2\)

\(\left(4\right)Fe\left(OH\right)_2+H_2SO_4\rightarrow FeSO_4+2H_2O\)

\(\left(5\right)2Fe+3Cl_2\rightarrow2FeCl_3\)

\(\left(6\right)FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3\downarrow+3NaCl\)

\(\left(7\right)2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)

11 tháng 12 2023

\(\left(1\right)2Fe+3Cl_2\xrightarrow[t^0]{}2FeCl_3\\ \left(2\right)FeCl_2+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\\ \left(3\right)2Fe\left(OH\right)_3\xrightarrow[t^0]{}Fe_2O_3+3H_2O\\ \left(4\right)Fe_2O_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+3H_2O\)

____________

\(\left(1\right)2Al+3Cl_2\rightarrow2AlCl_3\\ \left(2\right)AlCl_3+3AgNO_3\rightarrow Al\left(NO_3\right)_3+3AgCl\\ \left(3\right)Al\left(NO_3\right)_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaNO_3\\ \left(4\right)2Al\left(OH\right)_3\xrightarrow[t^0]{}Al_2O_3+3H_2O\\ \left(5\right)Al_2O_3+3CO\xrightarrow[]{t^0}2Al+3CO_2\\ \left(6\right)4Al+3O_2\xrightarrow[]{t^0}2Al_2O_3\\ \left(7\right)2Al+3H_2SO_4\xrightarrow[]{}Al_2\left(SO_4\right)_3+3H_2\\ \left(8\right)Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\)

1) \(Al\xrightarrow[]{\left(1\right)}Al_2O_3\xrightarrow[]{\left(2\right)}AlCl_3\xrightarrow[]{\left(3\right)}Al\left(OH\right)_3\) 2) \(Al\xrightarrow[]{\left(1\right)}AlCl_3\xrightarrow[]{\left(2\right)}Al\left(OH\right)_3\xrightarrow[]{\left(3\right)}Al_2O_3\) 3) \(Fe\xrightarrow[]{\left(1\right)}FeSO_4\xrightarrow[]{\left(2\right)}FeCl_2\xrightarrow[]{\left(3\right)}Fe\left(OH\right)_2\xrightarrow[]{\left(4\right)}FeO\) 4)...
Đọc tiếp

1) \(Al\xrightarrow[]{\left(1\right)}Al_2O_3\xrightarrow[]{\left(2\right)}AlCl_3\xrightarrow[]{\left(3\right)}Al\left(OH\right)_3\)

2) \(Al\xrightarrow[]{\left(1\right)}AlCl_3\xrightarrow[]{\left(2\right)}Al\left(OH\right)_3\xrightarrow[]{\left(3\right)}Al_2O_3\)

3) \(Fe\xrightarrow[]{\left(1\right)}FeSO_4\xrightarrow[]{\left(2\right)}FeCl_2\xrightarrow[]{\left(3\right)}Fe\left(OH\right)_2\xrightarrow[]{\left(4\right)}FeO\)

4) \(Fe\left(OH\right)_2\xrightarrow[]{\left(1\right)}FeO\xrightarrow[]{\left(2\right)}FeSO_4\xrightarrow[]{\left(3\right)}FeCl_2\xrightarrow[]{\left(4\right)}Fe\left(OH\right)_2\)

5) \(Fe\xrightarrow[]{\left(1\right)}FeCl_2\xrightarrow[]{\left(2\right)}Fe\left(NO_3\right)_2\xrightarrow[]{\left(3\right)}Fe\left(OH\right)_2\xrightarrow[]{\left(4\right)}FeSO_4\)

6) \(Fe\xrightarrow[]{\left(1\right)}FeCl_3\xrightarrow[]{\left(2\right)}Fe\left(OH\right)_3\xrightarrow[]{\left(3\right)}Fe_2\left(SO_4\right)_3\xrightarrow[]{\left(4\right)}FeCl_3\)

7) \(Fe\left(NO_3\right)_3\xrightarrow[]{\left(1\right)}Fe\left(OH\right)_3\xrightarrow[]{\left(2\right)}Fe_2O_3\xrightarrow[]{\left(3\right)}Fe\xrightarrow[]{\left(4\right)}FeCl_3\)

8) \(Fe_2\left(SO_4\right)_3\xrightarrow[]{\left(1\right)}Fe\left(OH\right)_3\xrightarrow[]{\left(2\right)}Fe_2O_3\xrightarrow[]{\left(3\right)}Fe_2\left(SO_4\right)_3\xrightarrow[]{\left(4\right)}FeCl_3\)

2
5 tháng 12 2019

1

1)4 Al+3O2→2Al2O3

(2)Al2O3+6HCl→2AlCl3+3H2O

(3)AlCl3+3NaOH→Al(OH)3+3NaCl

2

4Al+3O2→2Al2O3

Al2O3+6HCl→2AlCl3+3H2O

AlCl3+3NaOH→Al(OH)3+3NaCl

3

Fe+H2SO4→FeSO4+H2

(2)FeSO4+BaCl2→FeCl2+BaSO4

(3)FeCl2+2NaOH→Fe(OH)2+2NaCl

(4)Fe(OH)2→FeO+H2O

4

Fe+H2SO4→FeSO4+H2

FeSO4+BaCl2→FeCl2+BaSO4

FeCl2+2NaOH→Fe(OH)2+2NaCl

Fe(OH)2→FeO+H2O

5

Fe+2HCl→FeCl2+H2

(2)FeCl2+2AgNO3→Fe(NO3)2+2AgCl

(3)Fe(NO3)2+2NaOH→Fe(OH)2+2NaNO3

(4)Fe(OH)2+MgSO4→FeSO4+Mg(OH)2

5 tháng 12 2019

Câu 1 :

( 1 ) 4Al + 3O2 → 2Al2O3 ( Nhiệt độ )

( 2 ) Al2O3 + 6HCl → 2AlCl3 + 3H2O

( 3 ) AlCl3 + 3NaOH → Al(OH)3 + 3NaCl

Câu 2 :

( 1 ) 2Al + 6HCl → 2AlCl3 + 3H2

( 2 ) AlCl3 + 3NaOH → Al(OH)3 + 3NaCl

( 3 ) 2Al(OH)3 → Al2O3 + 3H2O ( Nhiệt độ )

Câu 3 :

( 1 ) Fe + H2SO4 → H2 + FeSO4

( 2 ) BaCl2 + FeSO4 → FeCl2 + BaSO4

( 3 ) FeCl2 + 2NaOH → NaCl + Fe(OH)2

( 4 ) Fe(OH)2 → FeO + H2O ( Nhiệt độ )

Câu 4 :

( 1 ) Fe(OH)2 → FeO + H2O ( Nhiệt độ )

( 2 ) FeO + H2SO4 → H2O + FeSO4

( 3 ) BaCl2 + FeSO4 → FeCl2 + BaSO4

( 4 ) FeCl2 + 2NaOH → NaCl + Fe(OH)2

Câu 5 :

( 1 ) Fe + 2HCl → FeCl2 + H2

( 2 ) 2AgNO3 + FeCl2 → 2AgCl + Fe(NO3)2

( 3 ) Fe(NO3)2 + NaOH → NaNO3 + Fe(OH)2

( 4 ) H2SO4 + Fe(OH)2 → 2H2O + FeSO4

Câu 6 :

( 1 ) 3Cl2 + 2Fe → 2FeCl3 ( Nhiệt độ )

( 2 ) 3NaOH + FeCl3 → 3NaCl + Fe(OH)3

( 3 ) 3H2SO4 + 2Fe(OH)3 → Fe2(SO4)3 + 6H2O

( 4 ) 3BaCl2 + Fe2(SO4)3 → 2FeCl3 + 3BaSO4

Câu 7 :

( 1 ) 3NaOH + Fe(NO3)3 → 3NaNO3 + Fe(OH)3

( 2 ) 2Fe(OH)3 → Fe2O3 + 3H2O ( Nhiệt độ )

( 3 ) 2Al + Fe2O3 → Al2O3 + 2Fe

( 4 ) 3Cl2 + 2Fe → 2FeCl3 ( Nhiệt độ )

Câu 8 :

( 1 ) Fe2(SO4)3 + 6NaOH → 3Na2SO4 + 2Fe(OH)3

( 2 ) 2Fe(OH)3 → Fe2O3 + 3H2O ( Nhiệt độ )

( 3 ) Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O

( 4 ) 3BaCl2 + Fe2(SO4)3 → 2FeCl3 + 3BaSO4

12 tháng 10 2023

\(Fe\left(OH\right)_3+3HCl\rightarrow FeCl_3+3H_2O\)

\(2KOH_{\left(dư\right)}+H_2SO_4\rightarrow K_2SO_4+2H_2O\)

\(NaOH+H_2SO_{4\left(dư\right)}\rightarrow NaHSO_4+H_2O\)

\(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)

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

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

12 tháng 10 2023

Còn `2` câu bạn giúp mình nốt ạ leuleu

\(KOH_{dư}+P_2O_5->\)

\(Ba\left(OH\right)_{2\left(dư\right)}+P_2O_5->\)

Câu 1 ) A / Mg(NO3) \(\underrightarrow{\left(1\right)}\) Mg(OH)2 \(\underrightarrow{\left(2\right)}\) MgCl2\(\underrightarrow{\left(3\right)}\) KCl \(\underrightarrow{\left(4\right)}\) KNO3 B/...
Đọc tiếp

Câu 1 ) A / Mg(NO3) \(\underrightarrow{\left(1\right)}\) Mg(OH)2 \(\underrightarrow{\left(2\right)}\) MgCl2\(\underrightarrow{\left(3\right)}\) KCl \(\underrightarrow{\left(4\right)}\) KNO3

B/ \(Na\underrightarrow{\left(1\right)}Na_2O\underrightarrow{\left(2\right)}NaOH\underrightarrow{\left(3\right)}Na_2SO_4\underrightarrow{\left(4\right)}NaCl\underrightarrow{\left(5\right)}NaNO_3\underrightarrow{\left(6\right)}NaCl\underrightarrow{\left(7\right)}NaOH\)

C/\(Mg\underrightarrow{\left(1\right)}MgO\underrightarrow{\left(2\right)}MgCl_2\underrightarrow{\left(3\right)}Mg\left(NO_3\right)_2\underrightarrow{\left(4\right)}Mg\left(OH\right)_2\underrightarrow{\left(5\right)}MgSO_4\underrightarrow{\left(6\right)}MgCO_3\)

D/\(CuSO_4\underrightarrow{\left(1\right)}Cu\left(OH\right)_2\underrightarrow{\left(2\right)}CuO\underrightarrow{\left(3\right)}CuCl_2\underrightarrow{\left(4\right)}Cu\left(OH\right)_2\underrightarrow{\left(5\right)}CuSO_4\)

E/\(CuCl_2\underrightarrow{\left(1\right)}Cu\left(OH\right)_2\underrightarrow{\left(2\right)}CuSO_4\underrightarrow{\left(3\right)}Cu\underrightarrow{\left(4\right)}CuO\)

F/ \(Cu\left(OH\right)_2\underrightarrow{\left(1\right)}CuO\underrightarrow{\left(2\right)}CuCl_2\underrightarrow{\left(3\right)}Cu\left(NO_3\right)_2\underrightarrow{\left(4\right)}NaNO_3\)

G/\(Fe_2O_3\underrightarrow{\left(1\right)}FeCl_3\underrightarrow{\left(2\right)}Fe\left(OH\right)_3\underrightarrow{\left(3\right)}Fe_2O_3\underrightarrow{\left(4\right)}Fe_2\left(SO_4\right)_3\)

H/ \(ZnCl_2\underrightarrow{\left(1\right)}Zn\left(OH\right)_2\underrightarrow{\left(2\right)}ZnCl_2\underrightarrow{\left(3\right)}NaCl\underrightarrow{\left(4\right)}NaNO_3\)

M/\(CuO\underrightarrow{\left(1\right)}CuCl_2\underrightarrow{\left(2\right)}Cu\left(OH\right)_2\underrightarrow{\left(3\right)}CuO\underrightarrow{\left(4\right)}CuSO_4\)

N/\(Fe\left(OH\right)_2\underrightarrow{\left(1\right)}FeO\underrightarrow{\left(2\right)}FeCl_2\underrightarrow{\left(3\right)}Fe\left(ỌH_2\right)\underrightarrow{\left(4\right)}FeSO_4\underrightarrow{\left(5\right)}FeCl_2\underrightarrow{\left(6\right)}Fe\left(NO_3\right)_2\)

Z/ \(Mg\left(OH\right)_2\underrightarrow{\left(1\right)}MgO\underrightarrow{\left(2\right)}MgSO_4\underrightarrow{\left(3\right)}MgCl_2\underrightarrow{\left(4\right)}Mg\left(OH\right)_2\underrightarrow{\left(5\right)}MgCl_2\underrightarrow{\left(6\right)}Mg\left(NO_3\right)_2\)

X/\(Al\left(OH\right)_3\underrightarrow{\left(1\right)}Al_2O_3\underrightarrow{\left(2\right)}AlCl_3\underrightarrow{\left(3\right)}Al\underrightarrow{\left(4\right)}Al_2\left(SO_4\right)_3\)

11
7 tháng 11 2018

g) 1. Fe2O3 + 6HCl → 2FeCl3 + 3H2O

2. FeCl3 + 3NaOH → 3NaCl + Fe(OH)3

3. 2Fe(OH)3 \(\underrightarrow{to}\) Fe2O3 + 3H2O

4. Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O

7 tháng 11 2018

h) 1. ZnCl2 + 2NaOH → 2NaCl + Zn(OH)2

2. Zn(OH)2 + 2HCl → ZnCl2 + 2H2O

3. ZnCl2 + 2NaOH → 2NaCl + Zn(OH)2

4. NaCl + AgNO3 → NaNO3 + AgCl↓

Bài 1 : Chuỗi phản ứng : a) \(Al\xrightarrow[]{\left(1\right)}Al_2O_3\xrightarrow[]{\left(2\right)}AlCl_3\xrightarrow[]{\left(3\right)}Al\left(OH\right)_3\) b) \(Al\xrightarrow[\left(1\right)]{}Al_2O_3\xrightarrow[]{\left(2\right)}AlCl_3\xrightarrow[\left(3\right)]{}Al\left(OH\right)_3Al_2O_3\) c) \(Fe\xrightarrow[]{\left(1\right)}FeSO_4\xrightarrow[]{\left(2\right)}FeCl_2\xrightarrow[]{\left(3\right)}Fe\left(OH\right)_2\xrightarrow[]{\left(4\right)}FeO\) d)...
Đọc tiếp

Bài 1 : Chuỗi phản ứng :

a) \(Al\xrightarrow[]{\left(1\right)}Al_2O_3\xrightarrow[]{\left(2\right)}AlCl_3\xrightarrow[]{\left(3\right)}Al\left(OH\right)_3\)

b) \(Al\xrightarrow[\left(1\right)]{}Al_2O_3\xrightarrow[]{\left(2\right)}AlCl_3\xrightarrow[\left(3\right)]{}Al\left(OH\right)_3Al_2O_3\)

c) \(Fe\xrightarrow[]{\left(1\right)}FeSO_4\xrightarrow[]{\left(2\right)}FeCl_2\xrightarrow[]{\left(3\right)}Fe\left(OH\right)_2\xrightarrow[]{\left(4\right)}FeO\)

d) \(Zn\xrightarrow[]{\left(1\right)}ZnSO_4\xrightarrow[]{\left(2\right)}ZnCl_2\xrightarrow[]{\left(3\right)}Zn\left(OH\right)_2\xrightarrow[]{\left(4\right)}ZnO\)

e) \(Mg\left(OH\right)_2\xrightarrow[]{\left(1\right)}MgCl_2\xrightarrow[]{\left(2\right)}Mg\left(NO_3\right)_2\xrightarrow[]{\left(3\right)}Mg\left(OH\right)_2\xrightarrow[]{\left(4\right)}MgO\)

f) \(Fe\left(OH\right)_2\xrightarrow[]{\left(1\right)}FeO\xrightarrow[]{\left(2\right)}FeSO_4\xrightarrow[]{\left(3\right)}FeCl_2\xrightarrow[]{\left(4\right)}Fe\left(OH\right)_2\)

g) \(Fe\xrightarrow[]{\left(1\right)}FeCl_2\xrightarrow[]{\left(2\right)}Fe\left(NO_3\right)_2\xrightarrow[]{\left(3\right)}Fe\left(OH\right)_2\xrightarrow[]{\left(4\right)}FeSO_4\)

h) \(S\xrightarrow[]{\left(1\right)}SO_2\xrightarrow[]{\left(2\right)}SO_3\xrightarrow[]{\left(3\right)}H_2SO_4\xrightarrow[]{\left(4\right)}SO_2\)

k) \(Cu\xrightarrow[]{\left(1\right)}CuO\xrightarrow[]{\left(2\right)}CuSO_4\xrightarrow[]{\left(3\right)}Cu\left(NO_3\right)_2\xrightarrow[]{\left(4\right)}Cu\left(OH\right)_2\)

Bài 2 : Phân biệt các chất rắn

a) Hai chất rắn: \(Cao\)\(P_2O_5\)

b) Hai chất rắn: BaO và \(P_2O_5\)

c) Hai chất rắn :\(Na_2O\)\(P_2O_5\)

d) Hai chất rắn :\(K_2O\)\(P_2O_5\)

e) Ba chất rắn : MgO, \(Na_2O\), \(P_2O_5\)

GIÚP MINH VỚI Ạ !!!!

4
25 tháng 11 2019

Bài 2

a) -Cho nước vào

CaO+H2O---->Ca(OH)2

P2O5+3H2O--->2H2PO4

-Cho QT vào Ca(OH)2 và H3PO4

-Lm QT hóa xanh là Ca(OH)2

-->MT bđ là CaO

-Lm QT hóa đỏ là H3PO4

-->MT bđ là P2O5

b) -Cho nước

BaO+H2O--->Ba(OH)2

P2O5+3H2O--->2H2PO4

-Cho QT vào Ba(OH)2 và H3PO4

-Lm QT hóa xanh là Ba(OH)2

-->MT bđ là BaO

-Lm QT hóa đỏ là H3PO4

-->MT bđ là P2O5

c)-Cho nước vào

Na2O+H2O--->2NaOH

P2O5+3H2O--->2H2PO4

-Cho QT vào NaOH và H3PO4

-Lm QT hóa xanh là NaOH

-->MT bđ là Na2O

-Lm QT hóa đỏ là H3PO4

-->MT bđ là P2O5

d)

K2O+H2O--->2KOH

P2O5+3H2O--->2H2PO4

-Cho QT vào KOH và H3PO4

-Lm QT hóa xanh là KOH

-->MT bđ là K2O

-Lm QT hóa đỏ là H3PO4

-->MT bđ là P2O5

e)-Cho nước vào

+Ko tan là Mgo

+Tan là Na2O và P2O5

Na2O+H2O--->2NaOH

P2O5+3H2O--->2H2PO4

-Cho QT vào NaOH và H3PO4

-Lm QT hóa xanh là NaOH

-->MT bđ là Na2O

-Lm QT hóa đỏ là H3PO4

-->MT bđ là P2O5

25 tháng 11 2019

a) Al(1)−→Al2O3(2)−→AlCl3(3)−→Al(OH)3Al→(1)Al2O3→(2)AlCl3→(3)Al(OH)3

b) Al−→(1)Al2O3(2)−→AlCl3−→(3)Al(OH)3Al2O3Al→(1)Al2O3→(2)AlCl3→(3)Al(OH)3Al2O3

c) Fe(1)−→FeSO4(2)−→FeCl2(3)−→Fe(OH)2(4)−→FeOFe→(1)FeSO4→(2)FeCl2→(3)Fe(OH)2→(4)FeO

d) Zn(1)−→ZnSO4(2)−→ZnCl2(3)−→Zn(OH)2(4)−→ZnOZn→(1)ZnSO4→(2)ZnCl2→(3)Zn(OH)2→(4)ZnO

e) Mg(OH)2(1)−→MgCl2(2)−→Mg(NO3)2(3)−→Mg(OH)2(4)−→MgOMg(OH)2→(1)MgCl2→(2)Mg(NO3)2→(3)Mg(OH)2→(4)MgO

f) Fe(OH)2→FeO+H2O

(2)FeO+H2SO4→FeSO4+H2O

(3)FeSO4+BaCl2→FeCl2+BaSO4

(4)FeCl2+2NaOH→Fe(OH)2+2NaCl

g) Fe(1)+2HCl→FeCl2+H2

(2)FeCl2+2AgNO3→Fe(NO3)2+2AgCl

(3)Fe(NO3)2+3NaOH→Fe(OH)2+2NaNO3

(4)Fe(OH)2+MgSO4→FeSO4+Mg(OH)2

h) S(1)+O2→SO2

(2)2SO2+O2→2SO3

(3)SO3+H2O→H2SO4

(4)6H2SO4+2Fe→Fe2(SO4)3+6H2O+2SO2

k) 2Cu(1)+O2→2CuO

(2)CuO+H2SO4→CuSO4+H2O

(3)CuSO4+Ba(NO3)2→Cu(NO3)2+BaSO4

(4)Cu(NO3)2+2NaOH→Cu(OH)2+2NaNO3

22 tháng 12 2017

(1) 2Fe + 3Cl2 -t0-> 2FeCl3

(2) FeCl3 + 3NaOH - > Fe(OH)3\(\downarrow\) + 3NaCl

(3) \(2Fe\left(OH\right)3-^{t0}->Fe2O3+3H2O\)

(4) \(Fe2O3+3H2SO4->Fe2\left(SO4\right)3+3H2O\)

23 tháng 12 2017

(1) 2Fe + 3Cl2 \(\rightarrow\) 2FeCl3

(2) FeCl3 + 3NaOH \(\rightarrow\) Fe(OH)3 + 3NaCl

(3) 2Fe(OH)3 \(\rightarrow\) Fe2O3 + 3H2O

(4) Fe2O3 + 3H2SO4 \(\rightarrow\) Fe2(SO4)3 + 3H2O

24 tháng 12 2022

`(1)FeO + H_2SO_4 -> FeSO_4 + H_2O`

`(2)FeSO_4 + Ba(OH)_2 -> Fe(OH)_2 + BaSO_4`

`(3)Fe(OH)_2 -> (t^o, chân.không) FeO + H_2O`

`(4)FeO + 2HCl -> FeCl_2 + H_2O`