Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
1. 2Al + 3O2 \(\rightarrow\) 2AlCl3
tỉ lệ 2:3:2
2. 2Fe + 3Cl2 \(\rightarrow\) 2FeCl3
tỉ lệ 2:3:2
3. 2Na + 2H2O \(\rightarrow\) 2NaOH + H2
tỉ lệ 2:2:2
4. Zn + 2HCl \(\rightarrow\) ZnCl2 + H2
tỉ lệ 1:2:1:1
5. 2CxHy + (2x+y/2)O2 \(\rightarrow\) 2xCO2 + yH2O
tỉ lệ 2:(2x+y/2):2x:y
6.P2O5 + 3H2O \(\rightarrow\) 2H3PO4
tỉ lệ 1:3:2
7. Fe2(SO4)3 + 6KOH \(\rightarrow\) 2Fe(OH)3 + 3K2SO4
tỉ lệ 1:6:2:3
8. 2Fe + 3Cl2 \(\rightarrow\) 2FeCl3
tỉ lệ 2:3:2
9. 2CnH2n-2 + (n-1)O2 \(\rightarrow\) 2nCO2 + 2(n-1)H2O
tỉ lệ 2:(n-1):2n:2(n-1)
10. N2O5 + H2O \(\rightarrow\) 2HNO3
tỉ lệ 1:1:2
11. FeCl3 + 3NaOH \(\rightarrow\) Fe(OH)3 + NaCl
tỉ lệ 1:3:1:1
12. 2Al + 3Cl2 \(\rightarrow\) 2AlCl3
tỉ lệ 2:3:2
![](https://rs.olm.vn/images/avt/0.png?1311)
\(2C_xH_yO_z+\dfrac{4x+y-2z}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)
\(2C_xH_yO+\dfrac{4x+y-2}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)
\(6Fe_xO_y+\left(12x-2y\right)H_2SO_{4\left(đ\right)}\underrightarrow{t^o}3xFe_2\left(SO_4\right)_3+\left(3x-2y\right)S+\left(12x-2y\right)H_2O\)
\(8Fe_xO_y+\left(30x-4y\right)HNO_3\rightarrow8xFe\left(NO_3\right)_3+\left(3x-2y\right)N_2O+\left(15x-2y\right)H_2O\)
2 PTHH đầu mình cân bằng như bth, 2 PTHH cuối mình dùng phương pháp electron
![](https://rs.olm.vn/images/avt/0.png?1311)
\(2KHCO_3+Ca\left(OH\right)_2\rightarrow K_2CO_2+CaCO_3+2H_2O\)
\(Al_2O_3+6KHSO_4\rightarrow Al_2\left(SO_4\right)_3+3K_2SO_4+3H_2O\)
\(nFe_2O_3+\left(3y-2x\right)H_2\rightarrow2Fe_xO_y+\left(3y-2x\right)H_2O\)
\(2NaHSO_4+BaCO_3\rightarrow Na_2SO_4+BaSO_4+CO_2+H_2O\)
\(6H_2SO_4+2Fe\rightarrow Fe_2\left(SO_4\right)_3+3SO_2+6H_2O\)
![](https://rs.olm.vn/images/avt/0.png?1311)
1: 2KMnO4 + 16HCl -> 2KCl + 2MnCl2 + 5Cl2 + 8H2O
2: Fe3O4 + 8HCl --> FeCl2 + 2FeCl3 + 4H2O
3: 3FexOy + 2yAl --> 3xFe + yAl2O3
4: 2FexOy + (6x-2y)H2SO4 --> xFe2(SO4)3 + (3x-2y)SO2 + (6x-2y)H2O
5: FexOy + yH2 --> xFe + yH2O
![](https://rs.olm.vn/images/avt/0.png?1311)
PTHH (1), (2), (3), (5), (8) đã cân bằng
\(\left(4\right)Ca\left(OH\right)_2+H_2SO_4\rightarrow CaSO_4+2H_2O\)
\(\left(6\right)Al\left(OH\right)_3+3HCl\rightarrow AlCl_3+3H_2O\)
\(\left(7\right)MnO_2+4HCl\rightarrow MnCl_2+Cl_2+2H_2O\)
\(\left(9\right)P_2O_5+3H_2O\rightarrow2H_3PO_4\)
\(\left(10\right)2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
CaO + CO2 → CaCO3
CaO + H2O → Ca(OH)2
CaCO3 + H2O + CO2 → Ca(HCO3)2
Ca(OH)2 + H2SO4 → CaSO4 + 2H2O
Fe + H2SO4 → FeSO4 + H2
2Al(OH)3 + 6HCl → 2AlCl3 + 6H2O
MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O
H2SO4 + Na2CO3 → Na2SO4 + CO2 + H2O
P2O5 + 3H2O → 2H3PO4
2Fe(OH)3 \(\underrightarrow{to}\) Fe2O3 + 3H2O
![](https://rs.olm.vn/images/avt/0.png?1311)
$\rm k)2KMnO_4 \xrightarrow{t^o} K_2MnO_4 + MnO_2 + O_2 \uparrow$
$\rm l)CH_4 + 2O_2 \xrightarrow{t^o} CO_2 + 2H_2O$
$\rm m)2Al + 3H_2SO_4 \rightarrow Al_2(SO_4)_3 + 3H_2 \uparrow$
$\rm n)Na_2CO_3 + CaCl_2 \rightarrow CaCO_3 \downarrow + 2NaCl$
$\rm o)2Na + 2H_2O \rightarrow 2NaOH + H_2 \uparrow$
$\rm p)CaO + 2HNO_3 \rightarrow Ca(NO_3)_2 + H_2O$
$\rm q)P_2O_5 + 3H_2O \rightarrow 2H_3PO_4$
$\rm r)Zn + 2HCl \rightarrow ZnCl_2 + H_2 \uparrow$
$\rm s)4Al + 3O_2 \xrightarrow{t^o} 2Al_2O_3$
$\rm t)Ba(OH)_2 + 2HCl \rightarrow BaCl_2 + 2H_2O$
![](https://rs.olm.vn/images/avt/0.png?1311)
1) 2CnH2n+3nO2→2nCO2+2nH2O
2) CnH2n + 2 + \(\dfrac{3n+1}{2}\) O2 -> nCO2 + (n+1)H2O.
3) CnH2n – 2 + \(\dfrac{3n-1}{2}\) O2 -> nCO2 +(n-1) H2O.
4) CnH2n-6 +\(\dfrac{3n-3}{2}\) O2 -> nCO2 + (n-3) H2O
5) CnH2n+2O+\(\dfrac{3n}{2}\)O2→nCO2+(n+1)H2O
6) 2CxHyOz + \(\dfrac{4x+y-2z}{2}\) O2 →2x CO2 + yH2O
7) CxHyOzNt + \(\left(x+\dfrac{y}{4}\right)-\dfrac{z}{2}\)O2→xCO2+\(\dfrac{y}{2}\)H2O + \(\dfrac{t}{2}\) N2
![](https://rs.olm.vn/images/avt/0.png?1311)
a. 4P + 5O2 \(\underrightarrow{t^o}\) 2P2O5
b. 4Al + 3O2 \(\underrightarrow{t^o}\) 2Al2O3
c. Fe + 2HCl \(\rightarrow\) FeCl2 + H2\(\uparrow\)
d. H2 + CuO \(\underrightarrow{t^o}\) Cu + H2O
e. 3CO + Fe2O3 \(\underrightarrow{t^o}\) 2Fe + 3CO2\(\uparrow\)
f. Cu + 2H2SO4 \(\rightarrow\) CuSO4 + SO2\(\uparrow\) + 2H2O
g. Fe + 4HNO3 \(\rightarrow\) Fe(NO3)3 + NO\(\uparrow\) + 2H2O
h. 2Al + 3H2SO4 \(\rightarrow\) Al2(SO4)3 + 3H2\(\uparrow\)
i. Ca(HCO3)2 \(\underrightarrow{t^o}\) CaCO3 + CO2\(\uparrow\) + H2O
1) 4Al+3O2->2Al2O3
2)2Zn+6H3PO4->2Zn2(PO4)3+9H2
3)
4)mk không nhìn đc
5)FexOy+yCO->xFe+yCO2
6)FexOy+2yxHCl->xFeCly+yH2O
7)2M+2nHCl->2MCln+nH2
8)4CxHy+(4x+y)O2->4xCO2+2yH2O
1,
2,
3, Không xảy ra nha bạn
4,
5,
6,
7,
2M + 2nHCl → 2MCln + nH2
8,