| Équations équilibrées la veille | Équations équilibrées le lendemain |
C2H5OH + 3 O2 = 2 CO2 + 3 H2O
CuO2 + CO = CO2 + Cu =>
CuO2 + 2 CO = 2 CO2 + Cu
Fe + H2O = Fe3O4 + H2 =>
3 Fe + 4 H2O = Fe3O4 + 4 H2
H2SO4Ca = CaSO4H2 =>
H2SO4Ca = CaSO4H2
KCl2 + H2SO4 + MnO2 = K2SO4 + MnSO4 + H2O + Cl2 =>
2 KCl2 + 2 H2SO4 + MnO2 = K2SO4 + MnSO4 + 2 H2O + 2 Cl2
Cr + O = Cr3O =>
3 Cr + O = Cr3O
NaHCO3(s) + CH3COOH(aq) = H2O(l) + CO2(g) + Na(s) =>
8 NaHCO3(s) + CH3COOH(aq) = 6 H2O(l) + 10 CO2(g) + 8 Na(s)
O2 + S4 = S3O5 =>
10 O2 + 3 S4 = 4 S3O5
(NH4)2O = N2 + H2 + O2 =>
2(NH4)2O = 2 N2 + 8 H2 + O2
C2H4 + F2 = CF4 + HF =>
C2H4 + 6 F2 = 2 CF4 + 4 HF
Na + Fe(NO2)3 = NaNO2 + Fe =>
3 Na + Fe(NO2)3 = 3 NaNO2 + Fe
Al2O3 = Al + O2 =>
2 Al2O3 = 4 Al + 3 O2
Pb(NO3) + KSO4 = PbSO4 + KNO3 =>
Pb(NO3) + KSO4 = PbSO4 + KNO3
H3O + SO4 = H2SO4 + H2O =>
2 H3O + SO4 = H2SO4 + 2 H2O
C8H14O2(l) + O2(g) = COH + H2O =>
2 C8H14O2(l) + 9 O2(g) = 16 COH + 6 H2O
K2Cr2O7 + FeCl2 + HCl = KCl + H2O + CrCl3 + FeCl3 =>
K2Cr2O7 + 6 FeCl2 + 14 HCl = 2 KCl + 7 H2O + 2 CrCl3 + 6 FeCl3
C21H40 + O3 = CO2 + H2O =>
3 C21H40 + 62 O3 = 63 CO2 + 60 H2O
Zn(OH)2 + OH{-} = Zn(OH)4{2-} =>
Zn(OH)2 + 2 OH{-} = Zn(OH)4{2-}
KMnO4 + Na2S + H2SO4 = K2SO4 + MnSO4 + Na2SO3 + H2O =>
6 KMnO4 + 5 Na2S + 9 H2SO4 = 3 K2SO4 + 6 MnSO4 + 5 Na2SO3 + 9 H2O
NaCl + Al2(SO4)3 = Na2(SO4) + Al(Cl)3 =>
6 NaCl + Al2(SO4)3 = 3 Na2(SO4) + 2 Al(Cl)3
KCl + NH4(OH) = K(OH) + NH4Cl =>
KCl + NH4(OH) = K(OH) + NH4Cl
Pb + CO = PbO + C =>
Pb + CO = PbO + C
Na2HPO4 + FeSO4 = Na2SO4 + Fe3(PO4)2 + H2SO4 =>
2 Na2HPO4 + 3 FeSO4 = 2 Na2SO4 + Fe3(PO4)2 + H2SO4
Fe + Ag = Fe2Ag =>
2 Fe + Ag = Fe2Ag
[Cu(OH)]2CO3 + CH3COOH = (CH3COO)2Cu + CO2 + H2O =>
[Cu(OH)]2CO3 + 4 CH3COOH = 2(CH3COO)2Cu + CO2 + 3 H2O
P2O5(g) + NaOH(g) = Na3PO4(g) + H2O(g) =>
P2O5(g) + 6 NaOH(g) = 2 Na3PO4(g) + 3 H2O(g)
NH3 + C = CH + N =>
NH3 + 3 C = 3 CH + N
Fe(NO3){3} + NH3 + H2O = Fe(OH){3} + NH4NO3 =>
Fe(NO3){3} + NH3 + H2O = Fe(OH){3} + NH4NO3
NaHCO3(aq) + H2SO4(aq) = CO2 + Na2SO4 + H2O =>
2 NaHCO3(aq) + H2SO4(aq) = 2 CO2 + Na2SO4 + 2 H2O
Sn(s) + NaOH(aq) = Na2SnO2(aq) + H2(g) =>
Sn(s) + 2 NaOH(aq) = Na2SnO2(aq) + H2(g)
C3H5OH + O = C3H4O + H2O =>
C3H5OH + O = C3H4O + H2O
V(HCO3)5 = CO2 + H2O + V2(CO3)5 =>
2 V(HCO3)5 = 5 CO2 + 5 H2O + V2(CO3)5
BaCl2(aq) + Na2SO4(aq) = BaSO4(s) + NaCl(aq) =>
BaCl2(aq) + Na2SO4(aq) = BaSO4(s) + 2 NaCl(aq)
H2S + HYO = S + Y2 + H2O =>
H2S + 2 HYO = S + Y2 + 2 H2O
Ce(OH)3 + H2O2 = Ce(OH)2(OOH)2 + H2O =>
2 Ce(OH)3 + 5 H2O2 = 2 Ce(OH)2(OOH)2 + 4 H2O
Fe3O4 + H2 = Fe + H2O3 =>
3 Fe3O4 + 4 H2 = 9 Fe + 4 H2O3
C3H8 + O2 = CO2 + H8C =>
C3H8 + 2 O2 = 2 CO2 + H8C
KJ + H2SO4 + KJO3 = J2 + K2SO4 + H2O =>
5 KJ + 3 H2SO4 + KJO3 = 3 J2 + 3 K2SO4 + 3 H2O
C2H4(aq) + O2(g) = CO2(g) + H2O(l) =>
C2H4(aq) + 3 O2(g) = 2 CO2(g) + 2 H2O(l)
Pb + Ni(No3)2 = Pb(No3)3 + Ni =>
2 Pb + 3 Ni(No3)2 = 2 Pb(No3)3 + 3 Ni
CaCO3(s) + HCl(l) = CaCl2 + H2CO3 =>
CaCO3(s) + 2 HCl(l) = CaCl2 + H2CO3
Mo + F2 = MoF6 =>
Mo + 3 F2 = MoF6
BaCl2 + K2SO4 = BaSO4 + KCl =>
BaCl2 + K2SO4 = BaSO4 + 2 KCl
N2 + HCl = NCl3 + H2 =>
N2 + 6 HCl = 2 NCl3 + 3 H2
Bi2Se3 + Bi2O3 + Se + Cu = BiCuSeO =>
Bi2Se3 + 2 Bi2O3 + 3 Se + 6 Cu = 6 BiCuSeO
PbO + SiO2 = PbOSiO2 =>
PbO + SiO2 = PbOSiO2
FeCl3 + (NH4)SCN = Fe(SCN)3 + NH4Cl =>
FeCl3 + 3(NH4)SCN = Fe(SCN)3 + 3 NH4Cl
C10H13N5O4 + O2 = CO2 + NO2 + H2O =>
4 C10H13N5O4 + 65 O2 = 40 CO2 + 20 NO2 + 26 H2O
C3H70H + O2 = CO2 + H2O =>
4 C3H70H + 83 O2 = 12 CO2 + 142 H2O
Cs4 + Br4 = Cs8Br8 =>
2 Cs4 + 2 Br4 = Cs8Br8
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