2AlCl3 --->2Al +3Cl2

4Al+3O2----.2Al2O3

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

Al2(SO4)3+3Mg(OH)2---->3MgSO4+ 2Al(OH)3

Al(OH)3+ HNO3----> Al(NO3)3+ 2H2O

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

+, 4Al + 3O₂ → 2Al₂O₃

+, Al₂O₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂O

+, Al₂(SO₄)₃ + 3Ba(OH)₂ → 2Al(OH)₃ + 3BaSO₄

+, Al(OH)₃ + 3HNO₃ → Al(NO₃)₃ + 3H₂O

- Good luck! ^^

Câu 6:

AlCl -> AlCl3

AlNO -> Al(NO3)3 hoặc Al(NO3)2

AlO -> Al2O3

AlS -> Al2S3

AlSO -> Al2(SO4)3 hoặc Al2(SO3)3

AlOH -> Al(OH)3 

AlPO -> AlPO4

Câu 7 : 

CTHH sai khi sửa lại là:  $AlCl_3, Al(NO_3)_3,Al_2S_3,Al_2(SO_4)_3,Al(OH)_3,AlPO_4$

Câu 8 : 

Ta có : 

$M= 137 + 62y = 261\Rightarrow y = 2$
Vậy CTHH là $Ba(NO_3)_2$

Câu 9:

Anh lập nhanh nha

a) PH3

b) P2O5

c) FeBr3

d) Ca3N2 

Câu 10:

a) Ba(OH)2

b) Al(NO3)3

c) ZnCO3

Bài 8:

Ba(NO3)2, Fe(NO3)3, Fe(NO3)2, CuCO3 và Li2CO3

Nếu em cần làm chi tiết như cách lớp 8 để ktra tự luận lần sau em đăng bài lên nhờ các anh chị làm chi tiết mn sẽ hỗ trợ em nha!

1/ 4Al+3O2->2Al2O3

2/ 4K+O2->2K2O

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

4/ Al2O3+6HCl->2AlCl3+3H2O

5/ 2Al+6HCl->2AlCl3+3H2

6/ FeO+2HCl->FeCl2+H2O

7/ Fe2O3+3H2SO4->Fe2(SO4)3+3H2O

8/ 2NaOH+H2SO4->Na2SO+2H2O

9/ 3Ca(OH)2+2FeCl3->3CaCl2+2Fe(OH)3

10/ BaCl2+H2SO4->BaSO4+2HCl

------------------------------<3-----------------------------------

Đáp án + Giải thích các bước giải:

(1) 4Al + 3O2 → 2Al2O3 (dưới nhiệt độ)

(2) Al2O3 + 3NaOH → 2NaAlO2 + H2O

(3) NaAlO2 + 2H2O + CO2 → Al(OH)3↓ + NaHCO3

(4) 2Al(OH)3 + 3H2SO4 → Al2(SO4)3 +  6H2O

(5) Al2(SO4)3 + BaCl2 → AlCl3 +  BaSO4

(6) AlCl3 + 3AgNO3 → 3AgCl↓ + Al(NO3)3

(7) 4Al(NO3)3 → 2Al2O3 + 12NO2↑ + O2↑

(8) 2Al2O3 → 4Al + 3O2↑

Cho mình gửi chúc bạn học tốt! Nhớ vote cho mình 5 sao, 1 tim và câu trả lời hay nhất nha!^^

Mình làm hơi lâu mong bạn thông cảm:<

(1) 4Al + 3O2 → 2Al2O3 (dưới nhiệt độ)

(2) Al2O3 + 3NaOH → 2NaAlO2 + H2O

(3) NaAlO2 + 2H2O + CO2 → Al(OH)3↓ + NaHCO3

(4) 2Al(OH)3 + 3H2SO4 → Al2(SO4)3 +  6H2O

(5) Al2(SO4)3 + BaCl2 → AlCl3 +  BaSO4

(6) AlCl3 + 3AgNO3 → 3AgCl↓ + Al(NO3)3

(7) 4Al(NO3)3 → 2Al2O3 + 12NO2↑ + O2↑

(8) 2Al2O3 → 4Al + 3O2↑

(1)4Al + 3O2 --> 2Al2O3
(2) Al2O3 + 2NaOH --> 2NaAlO2 + H2O
(3) NaAlO2 + 2H2O --> Al(OH)3 + NaOH
(4) 2Al(OH)3 + 3H2SO4 → Al2(SO4)3 + 6H2O
(5) Al2(SO4)3 + 3BaCl2 → 2AlCl3 + 3BaSO4 
(6) AlCl3 + 3AgNO3 → Al(NO3)3 + 3AgCl 
 

a)

(1) $2Al + 6HCl \to 2AlCl_3 + 3H_2$

(2) $AlCl_3 + 3KOH \to Al(OH)_3 + 3KCl$
(3) $2Al +3 H_2SO_4 \to Al_2(SO_4)_3 +3 H_2$
(4) $Al_2(SO_4)_3 + 3BaCl_2 \to 3BaSO_4 + 2AlCl_3$
b)

(1) $2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3$
(2) $FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl$
(3) $2Fe(OH)_3 + 3H_2SO_4 \to Fe_2(SO_4)_3 + 6H_2O$

(4) $Fe_2(SO_4)_3 + 3BaCl_2 \to 2FeCl_3 + 3BaSO_4$

4Al+3O2--t--> 2Al2O3

2Al2O3 ------(DPNC criolit)----> 4Al +3O2

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

AlCl3+3NaOH=> 3NaCl+Al(OH)3

2Al(OH)3+3H2SO4=> Al2(SO4)3+6H2O

1.

2Cu + O₂ -(to) → 2 CuO

CuO + H₂SO₄ → CuSO₄ + H₂O

CuSO₄ + BaCl₂ → CuCl₂ + BaSO₄↓

CuCl₂ + 2AgNO₃ → Cu(NO3)₂ + 2AgCl↓

Cu(NO3)₂ + NaOH → Cu(OH)₂↓ + 2NaNO₃

Cu(OH)₂ → CuO + H₂O

CuO + CO → Cu + CO₂

2.

4Al + 3O₂ → 2Al₂O₃

Al₂O₃ + 6HCl → 2AlCl₃ + 3H₂↑

AlCl₃ + 3NaOH_{(vừa đủ)} → Al(OH)₃ + 3NaCl

2Al(OH)₃ → Al₂O₃ + 3H₂O

2Al₂O₃-(đpnc) → 4Al + 3O₂↑

2Al + 2NaOH + 2H₂O → 2NaAlO₂ + 3H₂↑

AlCl₃ + 3NaOH -> Al(OH)₃ + 3NaCl

2Al(OH)₃ -> Al₂O₃ + 3H₂O

2Al₂O₃ \(\underrightarrow{đpnc}\) 4Al + 3O₂

b;

4Al + 3O₂ -> 2Al₂O₃

Al₂O₃ + 2NaOH + 2CO₂ + 3H₂O -> 2Al(OH)₃ + 2NaHCO₃

2Al(OH)₃ -> Al₂O₃ + 3H₂O

2Al2O3\(\xrightarrow[criolit]{đpnc}\)4Al+3O2

a)\(2Cu+O_2\underrightarrow{t^o}2CuO\)

\(CuO+2HCl\rightarrow CuCl_2+H_2O\)

\(CuCl_2+H_2SO_4\rightarrow CuSO_4+2HCl\)

\(CuSO_4+2NaOH\rightarrow Cu\left(OH\right)_2+Na_2SO_4\)

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

\(CuO+H_2\rightarrow Cu+H_2O\)

\(Cu+Cl_2\rightarrow CuCl_2\)

\(CuCl_2+2NaOH\rightarrow Cu\left(OH\right)_2+2NaCl\)

b)\(2Al+3Cl_2\rightarrow2AlCl_3\)

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

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

\(Al_2O_3+6HNO_3\rightarrow2Al\left(NO_3\right)_3+3H_2O\)

\(2Al\left(NO_3\right)_3+3Mg\rightarrow3Mg\left(NO_3\right)_2+2Al\)

a,

Cu+ \(\frac{1}{2}\)O2\(\underrightarrow{^{to}}\) CuO

CuO+ 2HCl \(\rightarrow\) CuCl2+ H2O

Phương trình 3 ko tồn tại

CuSO4+ 2NaOH \(\rightarrow\) Cu(OH)2+ Na2SO4

Cu(OH)2\(\underrightarrow{^{to}}\) CuO+ H2O

CuO+ CO \(\underrightarrow{^{to}}\)Cu+ CO2

Cu+ Cl2 \(\underrightarrow{^{to}}\)CuCl2

CuCl2+ 2NaOH\(\rightarrow\) Cu(OH)2+ 2NaCl

b,

Al+ 3/2Cl2 \(\underrightarrow{^{to}}\)AlCl3

AlCl3+ 3NH3+ 3H2O\(\rightarrow\)Al(OH)3+ 3NaCl

2Al(OH)3 \(\underrightarrow{^{to}}\) Al2O3+ 3H2O

Al2O3+ 6HNO3 \(\rightarrow\)2Al(NO3)3+ 3H2O

2Al(NO3)3+ 3Mg\(\rightarrow\) 3Mg(NO3)2+ 2Al

1) 2Al+2NaOH+2H₂O\(\rightarrow\)2NaAlO₂+3H₂

2) NaAlO₂+CO₂+2H₂O\(\rightarrow\)NaHCO₃+Al(OH)₃

3) Al(OH)₃+NaOH\(\rightarrow\)NaAlO₂+2H₂O

4) 2Al(OH)₃\(\rightarrow\)Al₂O₃+3H₂O

5) Al₂O₃+3H₂\(\rightarrow\)2Al+3H₂O

6) 4Al+3O₂\(\rightarrow\)2Al₂O₃

7) 2Al+ 3FeCl₂\(\rightarrow\)2AlCl₃+3Fe

8) 4Fe+3O₂\(\overset{t^0>450^0C}{\rightarrow}2Fe_2O_3\)

9) Fe₂O₃+2Al\(\rightarrow\)Al₂O₃+2Fe

10) Al₂O₃+2NaOH\(\rightarrow\)2NaAlO₂+H₂O

11) 2Al+3Fe(NO₃)₂\(\rightarrow\)2Al(NO₃)₃+3Fe

12) Al(NO₃)₃+3NaOH\(\rightarrow\)Al(OH)₃+3NaNO₃

13) 4Al+3O₂\(\rightarrow\)2Al₂O₃

14) Al₂O₃+6HCl\(\rightarrow\)2AlCl₃+3H₂O

15) AlCl₃+3NaOH\(\rightarrow\)Al(OH)₃+3NaCl