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![](https://rs.olm.vn/images/avt/0.png?1311)
\(2C_xH_y+\left(\dfrac{2x+y}{2}\right)O_2\rightarrow2xCO_2+yH_2O\)
\(C_nH_{2n+2}+\left(\dfrac{3n+1}{2}\right)O_2\rightarrow nCO_2+\left(n+1\right)H_2O\)
\(C_nH_{2n}+\dfrac{3n}{2}O_2\rightarrow nCO_2+nH_2O\)
![](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)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
![](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
Trần Quốc Chiến mik cân ra
\(C_xH_y+\left(x+\dfrac{y}{4}\right)O_2\rightarrow xCO_2+\dfrac{y}{2}H_2O\)
nhưng k nên để dưới dạng mẫu số