Al + HCl \(\rightarrow\) Al2O3 + H2
Al2O3 +HCl \(\rightarrow\) AlCl3 + H2O
AlCl3 + NaOH \(\rightarrow\)Al(OH)3 + NaCl
hoàn thành sơ đồ phản ứng:
\(Al2O3\xrightarrow[3000^oC]{+than}|^{CO\rightarrow CO2}_{Al2O3\rightarrow|^{Al\left(ỌH\right)3\downarrow\rightarrow AlCl3,hoacNaAlO2}_{CH4\underrightarrow{+Cl2}|^{HCl}_{CH3Cl\underrightarrow{O2}HCl+H2O+CO2}}}\)
Giúp mình nha thanks
(1) 2Al2O3 + 9C \(^{3000^oC}\rightarrow\) Al4C3 + 6CO
(2) CO + CuO \(^{to}\rightarrow\) Cu + CO2 \(\uparrow\)
(3)Al(OH)3 + NaOH -> NaAlO2 + 2H2O
Al(OH)3 +3 HCl -> AlCl3 + 3H2O
(4)Al4C3 + 5H2O -> 2Al2O3 + 3CH4
(5) 2CH4 + Cl2 -> HCl + CH3Cl
(6)CH3Cl + \(\dfrac{3}{2}\)O2 -> H2O + HCl + CO2
Hình như bạn nhầm rồi, từ Al2O3+ than vẫn ra Al2O3 là sao?
2Al2O3 + 9C ---> Al4C3 + 6H2O
1, Al+O2➝Al2O32,K+O2➞K2O3,Al(OH)3➞Al2O3+H2O4,Al2O3+HCl➜AlCl3+H2O5,Al+HCl➜AlCl3+H2↑6,FeO+HCl➜FeCl2+H2O7,Fe2O3+H2SO4➜Fe2(SO4)3+H2O8,NaOH+H2SO4➜Na2SO4+H2O9,Ca(OH)2+FeCl3->CaCl2+Fe(OH)310,BaCl2+H2SO4->BaSO4↓+HCl
\(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)
\(4K+O_2\rightarrow2K_2O\)
\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
\(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
\(CaCl_2+Fe\left(OH\right)_3\rightarrow\) Không phản ứng
\(BaCl_2+H_2SO_4\rightarrow2HCl+BaSO_4\downarrow\)
1
Lập phương trình hóa học sau:
1/ Na2O + H2O --- > NaOH
2/ Na + H2O --- > NaOH + H2
3/ Al(OH)3 --- > Al2O3 + H2O
4/ Al2O3 + HCl --- > AlCl3 + H2O
5/ FeO + HCl --- > FeCl2 + H2O
6/ P + O2 --- > P2O5
7/ N2O5 + H2O --- > HNO3
8/ Zn + HCl --- > ZnCl2 + H2
9/ Al + CuCl2 --- > AlCl3 + Cu
10 / Al + H2SO4 --- > Al2(SO4)3 + H2
Giúp mik với
1: \(Na_2O+H_2O->2NaOH\)
2: \(2Na+2H_2O->2NaOH+H_2\uparrow\)
3: \(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
4: \(Al_2O_3+6HCl->2AlCl_3+3H_2O\)
5: \(FeO+2HCl->FeCl_2+H_2O\)
6: \(4P+5O_2\underrightarrow{t^o}2P_2O_5\)
7: \(N_2O_5+H_2O->2HNO_3\)
8: \(Zn+2HCl->ZnCl_2+H_2\)
9: \(2Al+3CuCl_2->2AlCl_3+3Cu\downarrow\)
10: \(2Al+3H_2SO_4->Al_2\left(SO_4\right)_3+3H_2\uparrow\)
1. \(Na_2O+H_2O\rightarrow2NaOH\)
2. \(2Na+2H_2O\rightarrow2NaOH+H_2\)
3. \(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
4. \(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
5. \(FeO+2HCl\rightarrow FeCl_2+H_2O\)
6. \(4P+5O_2\underrightarrow{t^o}2P_2O_5\)
7. \(N_2O_5+H_2O\rightarrow2HNO_3\)
8. \(Zn+2HCl\rightarrow ZnCl_2+H_2\)
9. \(2Al+3CuCl_2\rightarrow2AlCl_3+3Cu\)
10. \(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\uparrow\)
Cân bằng các phản ứng sau theo phương pháp electron:
1. SO2 + H2S \(\rightarrow\) S + H2O
2. Al + Fe3O4 \(\rightarrow\) Al2O3 + Fe
3. SO2 + Cl2 + H2O \(\rightarrow\) H2SO4 + HCl
4. MnO2 + HCl \(\rightarrow\) MnCl2 + Cl2 + H2O
5. Cu + HNO3 \(\rightarrow\) Cu(NO3)2 + NO2 + H2O
6. Mg + H2SO4(n) \(\rightarrow\) MgSO4 + S + H2O
7*. FeSO4 + KMnO4 + H2SO4 \(\rightarrow\) Fe2(SO4)3 + MnSO4 + K2SO4 + H2O
8*. H2S + KMnO4 + H2SO4 \(\rightarrow\) MnSO4 + K2SO4 + S\(\downarrow\) + H2O
A) Al +HCl - AlCl3 + H2
B) Al(OH)3 - Al2O3 +H2O
D) Mg(OH)2 +H2SO4 - MgSO4+H2O
A/ 2Al + 6HCl ===> 2AlCl3 + 3H2
B/ 2Al(OH)3 =(nhiêt)==> Al2O3 + 3H2O
C/ Mg(OH)2 + H2SO4 ===> MgSO4 + 2H2O
Sau khi cân bằng ta được phương trình hóa học :
A) 2Al +6HCl ---------> 2AlCl3 + 3H2
B) 2Al(OH)3 ---------> Al2O3 + 3H2O
D) Mg(OH)2 +H2SO4 ---------> MgSO4+ 2H2O
Cân bằng ?
A)Đặt aAl +bHCl -> cAlCl3 + dH2
Từ đó suy ra :
Về Al : \(a=c\)
Về H : \(b=2d\)
Về Cl : \(b=3c\)
\(\Rightarrow b=3c=3a=2d\)
Lấy \(a=c=2\)(Hoặc bất kỳ gia trị dương nào )
\(\Rightarrow b=6;d=3\)
Cuối cùng có :
2Al +6HCl -> 2AlCl3 + 3H2
b) Đặt aAl(OH)3 -> bAl2O3+cH2O
Tương tự :
+Al : \(a=2b\)
+O: \(3a=3b+c\)
+H: \(3a=2c\)
=> 2c=3b+c
=> c=3b
Lấy b = 1 có : \(\begin{cases}a=2\\b=1\\c=3\end{cases}\)
Cuối cùng có : 2Al(OH)3 -> Al2O3+3H2O
D)Đặt aMg(OH)2+bH2SO4 -> cMgSO4+dH2O
Về Mg: \(a=c\)
Về O :\(2a+4b=4c+d\)
Về H: \(2a+2b=2d\rightarrow a+b=d\)
Về S: \(b=c\)
Lấy c = 1 và có : \(a=b=c=1\)
\(\Rightarrow d=a+b=1+1=2\)
Cuối cùng có : Mg(OH)2+H2SO4 -> MgSO4+2H2O
ài 5: Lập các phương trình hoá học sau: 1. Al + O2 Al2O3 2. NaOH + H2SO4 Na2SO4 + H2O 3.Al + HCl AlCl3 + H2 4. Fe2O3 + H2SO4 Fe2(SO4)3 + H2O 5. P2O5 + H2O H3PO4 6.Ca(OH)2 + FeCl3 CaCl2 + Fe(OH)3
1) 4Al + 3O2 --to--> 2Al2O3
2) 2NaOH + H2SO4 --> Na2SO4 + 2H2O
3) 2Al + 6HCl --> 2AlCl3 + 3H2
4) Fe2O3 + 3H2SO4 --> Fe2(SO4)3 + 3H2O
5) P2O5 + 3H2O --> 2H3PO4
6) 3Ca(OH)2 + 2FeCl3 --> 3CaCl2 + 2Fe(OH)3
1.Lập phương trình hóa học:
a,Al+CuCl2 -> AlCl3+Cu
b,Na+HCl -> NaCl+H2
c,N2O5+H2O -> HNO3
d,Al(OH)3 -> Al2O3+H2O
e,Fe2O3+H2 -> Fe + H2O
Cái này cân bằng à:
a) 2Al+ 3CuCl2 -> 2AlCl3 +3Cu
b) 2Na + 2HCl -> 2NaCl + H2
c) N2O5 + H2O-> 2HNO3
d) 2Al(OH)3 -t0-> Al2O3 +3H2O
e) Fe2O3 +3H2 -t0-> 2Fe +3H2O
a,
2Al | + | 3CuCl2 | → | 2AlCl3 | + |
3Cu |
b,
2HCl | + | 2Na | → | H2 | + | 2NaCl |
c,
H2O | + | N2O5 | → | 2HNO3 |
d,
2Al(OH)3 | → | Al2O3 | + |
3H2O |
e,
3Fe2O3 | + | H2 | → | H2O | + | 2Fe3O4 |
Mình xin lỗi câu e là
3Fe2O3 | + | H2 | → | H2O | + | 2Fe3O4 |
1) Lập phương trình hóa học
a) Al + Cl2 ---> AlCl3
b) Fe2O3 + H2 ---> Fe + H2O
c) P + O2 ---. P2O5
d) Al(OH)3 ---> Al2O3 + H2O
e) ( NH4)2CO3 + NaOH ---> Na2CO3 + NH3 + H2O
f) Fe + HCl ---> FeCl2 + O2
g) KClO3 ----> KCl + O2
h) NaOH + FeCl3 ----> Fe(OH)3 + NaCl
i) ZnO + HCl ----> ZnCl2 + H2O
k) K + H2O ----> KOH + H2
m) Na + H2O ----> NaOH + H2
n) BaCl2 + H2SO4 -----> BaSO4 + HCl
o) Na2O + H2O ---> NaOH
a) 2Al + 3Cl2 ---> 2AlCl3
b) Fe2O3 + 3H2 ---> 2Fe + 3H2O
c) 4P + 5O2 ---. 2P2O5
d) 2Al(OH)3 ---> Al2O3 + 3H2O
e) (NH4)2CO3 + 2NaOH ---> 2Na2CO3 + NH3 + 2H2O
f) Fe + HCl ---> FeCl2 + O2 (đề sai)
g) 2KClO3 ----> 2KCl + 3O2
h) 3NaOH + FeCl3 ----> Fe(OH)3 + 3NaCl
i) ZnO + 2HCl ----> ZnCl2 + H2O
k) 2K + 2H2O ----> 2KOH + H2
m) 2Na + 2H2O ----> 2NaOH + H2
n) BaCl2 + H2SO4 -----> BaSO4 + 2HCl
o) Na2O + H2O ---> 2NaOH
a) 2Al + 3Cl2 → 2AlCl3
b) 2Fe2O3 + 6H2 → 4Fe + 6H2O
c)4P +5O2 → 2P2O5
d) 2Al(OH)3 → Al2O3 + 3H2O
e) \(\left(NH_4\right)_2CO_3+2NaOH\rightarrow Na_2CO_3+2NH_3+2H_2O\)
f) Fe + 2HCl → FeCl2 + H2
g) 2KClO3 → 2KCl + 3O2
h) 3NaOH + FeCl3 → Fe(OH)3 + 3NaCl
i) ZnO + 2HCl → ZnCl2 + H2O
k) 2K + 2H2O → 2KOH + H2
m) 2Na + 2H2O → 2NaOH + H2
n) BaCl2 + H2SO4 → BaSO4 + 2HCl
o) Na2O + H2O → 2NaOH
2Al+3Cl2--->2AlCl3
Fe2O3+3H2--->2Fe+3H2O
4P+5O2--->2P2O5
2Al(OH)3--->Al2O3+3H2O
(NH4)2CO3+2NaOH--->Na2CO3+2NH3+2H2O
Fe+2HCl--->FeCl2+H2
2KClO3--->2KCl+3O2
3NaOH+FeCl3-->Fe(OH)3+3NaCl
ZnO++2HCl-->ZnCl2+H2O
2K+2H2O--->2KOH+H2
2Na+2H2O--->2NaOH+H2
BaCl2+H2SO4--->BaSO4+2HCl
Na2O+H2O--->2NaOH
a. P2O5+CaO- - - >Ca3(PO4)2 b.Mg+ Hcl- - -> MgCl2+H2 c. Fe(OH)2+ H2SO4- - -> FeSO4+H2O d. Al(OH)3 +Hcl- - ->AlCl3+ H2O e. NaOH+CuCl2 - - -> NaCl+ Cu(OH)2
a. P2O5+3CaO- - - >Ca3(PO4)2
b.Mg+ 2Hcl- - -> MgCl2+H2
c. Fe(OH)2+ H2SO4- - -> FeSO4+2H2O
d. Al(OH)3 +3Hcl- - ->AlCl3+ 3H2O
e.2 NaOH+CuCl2 - - -> 2NaCl+ Cu(OH)2