a) \(N_2+O_2\rightarrow2NO\)

\(\begin{matrix}N^0\rightarrow N^{+2}+2e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times1\end{matrix}\)

b) \(C_2H_5OH+3O_2\rightarrow2CO_2+3H_2O\)

\(\begin{matrix}C^{-2}\rightarrow C^{+4}+6e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times3\end{matrix}\)

c) \(CH_4+2O_2\rightarrow CO_2+2H_2O\)

\(\begin{matrix}C^{-4}\rightarrow C^{+4}+8e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times4\end{matrix}\)

d) \(2H_2S+3O_2\rightarrow2H_2O+2SO_2\)

\(\begin{matrix}S^{-2}\rightarrow S^{+4}+6e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times3\end{matrix}\)

e) \(4NH_3+3O_2\rightarrow2N_2+6H_2O\)

\(\begin{matrix}N^{-3}\rightarrow N^0+3e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times2\\\times3\end{matrix}\)

a)N2+O2->2NO

b)C2H5OH+3O2->2CO2+3H2O

c)CH4+2O2->CO2+2H2O

d)H2S+3/2O2->H2O+SO2 / 2H2S+3O2->2H2O+2SO2

e)2NH3+3/2O2->N2+3H2O / 4NH3+3O2->2N2+6H2O

CHÚC BN HỌC TỐT :))))

a) \(4P+5O_2\underrightarrow{t^o}2P_2O_5\)

b) \(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)

c) \(SO_3+H_2O\rightarrow H_2SO_4\)

d) \(2Na+2H_2O\rightarrow2NaOH+H_2\)

e) \(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)

f) \(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)

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

h) \(K_2O+H_2O\rightarrow2KOH\)

i) \(Ca+2H_2O\rightarrow Ca\left(OH\right)_2+H_2\)

j) \(2H_2+O_2\underrightarrow{t^o}2H_2O\)

k) \(Zn+2HCl\rightarrow ZnCl_2+H_2\)

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

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

n) \(P_2O_5+3H_2O\rightarrow2H_3PO_4\)

 Phản ứng hóa hợp : a) , b) , c) , f) , h) , j) , n)

Phản ứng thế : d) , g) , i) , k) , l) , m)

 Chúc bạn học tốt

a)\(4P+5O_2\underrightarrow{t^o}2P_2O_5\)

b)\(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)

c)\(SO_3+H_2O\rightarrow H_2SO_4\)

d)\(2Na+2H_2O\rightarrow2NaOH+H_2\)

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

f)\(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)

g)\(3H_2+Fe_2O_3\rightarrow2Fe+3H_2O\)

h)\(K_2O+H_2O\rightarrow2KOH\)

i)\(Ca+2H_2O\rightarrow Ca\left(OH\right)_2+H_2\)

j)\(2H_2+O_2\underrightarrow{t^o}2H_2O\)

k)\(Zn+2HCl\rightarrow ZnCl_2+H_2\)

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

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

n)\(P_2O_5+3H_2O\rightarrow2H_3PO_4\)

\(2C_xH_y+\left(\dfrac{2x+y}{2}\right)O_2\rightarrow2xCO_2+yH_2O\)

\(C_nH_{2n+2}+\left(\dfrac{3n+1}{2}\right)O_2\rightarrow nCO_2+\left(n+1\right)H_2O\)

\(C_nH_{2n}+\dfrac{3n}{2}O_2\rightarrow nCO_2+nH_2O\)

b)2CxHy + (2x-y)O2 → 2xCO2 + 2yH2O

c)2CmH2m-2+(3m-1)O2 → 2mCO2 + (2m-2) H2O

d)2CxHyOz+(2x+y-z)O2

→2xCO2 + 2yH2O

Đề có vấn đề à

1) 2

2) C_nH_{2n + 2} + \(\dfrac{3n+1}{2}\) O₂ -> nCO₂ + (n+1)H₂O.

3) C_nH_{2n – 2} + \(\dfrac{3n-1}{2}\) O₂ -> nCO₂ +(n-1) H2O.

4) C_nH_2n-6 +\(\dfrac{3n-3}{2}\) O2 -> nCO2 + (n-3) H2O

5) O+\(\dfrac{3n}{2}\)O2→n+(n+1)H2O

6) 2C_xH_yO_z + \(\dfrac{4x+y-2z}{2}\) O2 →2x CO₂ + yH₂O

7)

\(2C_xH_yO_z+\dfrac{4x+y-2z}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)

\(2C_xH_yO+\dfrac{4x+y-2}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)

\(6Fe_xO_y+\left(12x-2y\right)H_2SO_{4\left(đ\right)}\underrightarrow{t^o}3xFe_2\left(SO_4\right)_3+\left(3x-2y\right)S+\left(12x-2y\right)H_2O\)

\(8Fe_xO_y+\left(30x-4y\right)HNO_3\rightarrow8xFe\left(NO_3\right)_3+\left(3x-2y\right)N_2O+\left(15x-2y\right)H_2O\)

\(n_{H_2O}=\dfrac{1.8}{18}=0.1\left(mol\right)\)

\(C_2H_2+\dfrac{5}{2}O_2\underrightarrow{t^0}2CO_2+H_2O\)

\(0.1.........0.25......0.2..........0.1\)

\(V_{C_2H_2}=2.24\left(l\right)\)

\(V_{O_2}=0.25\cdot22.4=5.6\left(l\right)\)

\(V_{CO_2}=0.2\cdot22.4=4.48\left(l\right)\)

Cô có chỉnh sửa đề 1 chút cho phù hợp

\(\dfrac{4x+v-2z}{2}\)2xCO₂ + vH₂O

C_xHyO_Z +(x+y/4-z/2) O_{2 -> x}CO2 +y/2 H₂O

2Fe(OH)3−>Fe2O3+3H2O

a, 4P+5O2--->2P2O5

Tỉ lệ: 4:5:2

b, 2Fe(OH)3--->Fe2O3+3H2O

Tỉ lệ: 2:1:3

c, Al2O3+6HCl--->2AlCl3+3H2O

Tỉ lệ: 1:6:2:3

d, 2K+2H2O--->2KOH+H2

Tỉ lệ: 2:2:2:1

e, 4Na+O2--->2Na2O

Tỉ lệ: 4:1:2

f, 2KClO3--->2KCl+3O2

Tỉ lệ: 2:2:3