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a) 4Na + O2 → 2Na2O
b) 2Cu + O2 → 2CuO
c) (4x + y)O2 + 2CxHy → 2xCO2 + yH2O
e) 8H2SO4 + 2KMnO4 + 10FeSO4 → 5Fe2(SO4)3 + 8H2O + 2MnSO4 + K2SO4
f) 2KMnO4 → K2MnO4 + MnO2 + O2
a/ 4Na + O2 ===> 2Na2O
b/ 2Cu + O2 ===> 2CuO
c/ 2CxHy +(4x+y) O2 ===> 2xCO2 + yH2O
d/ 2CxHyOt +\(\frac{4x+y-2t}{2}\) O2 ===> 2xCO2 + yH2O
e/ 8H2SO4+2KMnO4+10FeSO4→5Fe2(SO4)3+8H2O+2MnSO4+K2SO4
f/ 2KMnO4 =(nhiệt)==> K2MnO4 + MnO2 + O2
a) \(3Fe+2O_2\rightarrow Fe_3O_4\)
b) \(Fe_3O_4+8HCl\rightarrow FeCl_2+2FeCl_3+4H_2O\)
c) \(2NaHCO_3\rightarrow Na_2CO_3+CO_2+H_2O\)
d) \(2C_2H_2+5O_2\rightarrow4CO_2+2H_2O\)
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
1) \(MnO_2+4HCl\rightarrow MnCl_2+2H_2O+Cl_2\)
2) \(Fe_2O_3+6HNO_3\rightarrow2Fe\left(NO_3\right)_3+3H_2O\)
3) \(KClO_3+6HCl\rightarrow KCl+3Cl_2+3H_2O\)
4) \(2C_xH_yO_z+\dfrac{4x+y-2z}{2}O_2\rightarrow2xCO_2+yH_2O\)
5) \(C_xH_y+\left(x+\dfrac{1}{4}y\right)O_2\rightarrow xCO_2+\dfrac{1}{2}yH_2O\)
1) 4HCl + MnO2 → 2H2O + MnCl2 + Cl2
2)Fe2O3 + 6HNO3 →2Fe(NO3)2 + 3H2O
3) 6HCl + KClO3 → 3Cl2 + 3H2O + KCl
4) 2CxHyOz +\(\dfrac{4x+y-2z}{2}\)O2 → 2xCO2 + \(y\)H2O
5) (4x+y)O2 + 2CxHy → yH2O + 2xCO2
Cô có chỉnh sửa đề 1 chút cho phù hợp
2CxHvOz + \(\dfrac{4x+v-2z}{2}\) O2 → 2xCO2 + vH2O
2CxHvOzNt + \(\dfrac{4x+v-2z}{2}\)O2→2xCO2 + vH2O+ tN2
2CHx + \(\dfrac{4+x}{2}\) O2→ 2CO2 + xH2O
2FeCl2 + Cl2→ 2FeCl3
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
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
\(C_xH_y+\left(x+\dfrac{y}{4}\right)O_2\xrightarrow[]{t^\circ}xCO_2+\dfrac{y}{2}H_2O\)