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 :))))

CH4 + 2O2 -> (t°) CO2 + 2H2O

C2H2 + 2Br2 -> C2H2Br4

CH4 + Cl2 -> (askt) CH3Cl + HCl

2C2H2 + 5O2 -> (t°) 4CO2 + 2H2O

C2H4 + Br2 -> C2H4Br2

nCH2=CH2 -> (t°, p, xt) n(-CH2-CH2-)

C2H4 + 3O2 -> (t°) 2CO2 + 2H2O

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) 2KClO₃ \(\underrightarrow{to}\) 2KCl + 3O₂

5O₂ + 4P \(\underrightarrow{to}\) 2P₂O₅

P₂O₅ + 3H₂O → 2H₃PO₄

2H₃PO₄ + 3Ca → Ca₃(PO₄)₂ + 3H₂

2) 2KClO₃ \(\underrightarrow{to}\) 2KCl + 3O₂

O₂ + 4Na → 2Na₂O

Na₂O + H₂O → 2NaOH

2KClO₃ \(\underrightarrow{to}\) 2KCl + 3O₂

O₂ + 2H₂ \(\underrightarrow{to}\) 2H₂O

2H₂O \(\xrightarrow[phân]{điện}\) 2H₂ + O₂

2H₂ + O₂ \(\underrightarrow{to}\) 2H₂O

H₂O + K₂O → 2KOH

$\rm k)2KMnO_4 \xrightarrow{t^o} K_2MnO_4 + MnO_2 + O_2 \uparrow$
$\rm l)CH_4 + 2O_2 \xrightarrow{t^o} CO_2 + 2H_2O$
$\rm m)2Al + 3H_2SO_4 \rightarrow Al_2(SO_4)_3 + 3H_2 \uparrow$
$\rm n)Na_2CO_3 + CaCl_2 \rightarrow CaCO_3 \downarrow + 2NaCl$
$\rm o)2Na + 2H_2O \rightarrow 2NaOH + H_2 \uparrow$
$\rm p)CaO + 2HNO_3 \rightarrow Ca(NO_3)_2 + H_2O$
$\rm q)P_2O_5 + 3H_2O \rightarrow 2H_3PO_4$
$\rm r)Zn + 2HCl \rightarrow ZnCl_2 + H_2 \uparrow$
$\rm s)4Al + 3O_2 \xrightarrow{t^o} 2Al_2O_3$
$\rm t)Ba(OH)_2 + 2HCl \rightarrow BaCl_2 + 2H_2O$

M bik lm r thì kệ m

Ai lm cho m đâu

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

\(2C_4H_{10}+13O_2\rightarrow CO_2+10H_2O\)

\(2C_xH_y+\frac{\left(4x+y\right)}{2}O_2\rightarrow2xCO_2+yH_2O\)

2KNO3⇒2KNO2+O2 (phản ứng ohaan hủy)

Cho các phản ứng hóa học sau (chú ý cân bằng các phương trình hóa học này trước ):

Cho biết phản ứng nào là:

a, Phản ứng oxi hóa.

b, Phản ứng hóa hợp .

c, Phản ứng cháy.

d, Phản ứng phân hủy.

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)

8)

9) 2

10)

11)

12) 3