| Équations équilibrées la veille | Équations équilibrées le lendemain |
3 S2O3 + 2 KI3 = 3 I2 + K2(S2O3)3
CrO7{2-} + H{+} + e = Cr{3+} + H2O =>
CrO7{2-} + 14 H{+} + 9e = Cr{3+} + 7 H2O
F2O3 + Hg(NO3) + Na2O = Na3N + Hg(FO2) + O2 =>
F2O3 + 2 Hg(NO3) + 3 Na2O = 2 Na3N + 2 Hg(FO2) + 4 O2
C4H8 + KMnO5 + H2O = C4H8(OH)2 + MnO2 + KOH =>
5 C4H8 + 2 KMnO5 + 6 H2O = 5 C4H8(OH)2 + 2 MnO2 + 2 KOH
HfOCl2 + Na2S2O3 + H2O = Hf(OH)4 + NaCl + S + SO2 =>
HfOCl2 + Na2S2O3 + 2 H2O = Hf(OH)4 + 2 NaCl + S + SO2
H3PO4(aq) + RbOH(aq) = H2O(aq) + Rb3PO4(aq) =>
H3PO4(aq) + 3 RbOH(aq) = 3 H2O(aq) + Rb3PO4(aq)
Fe{+2} + (Cr2O7){-2} + H{+} = Fe{+3} + Cr3{+3} + H2O =>
30 Fe{+2} + 3(Cr2O7){-2} + 42 H{+} = 30 Fe{+3} + 2 Cr3{+3} + 21 H2O
NaHCO3 + Ca(H2PO4)2 = Na2HPO4 + CaHPO4 + CO2 + H2O =>
2 NaHCO3 + Ca(H2PO4)2 = Na2HPO4 + CaHPO4 + 2 CO2 + 2 H2O
H2O + K2C2O4 + KMnO4 = Mn2O3 + KOH + CO2 =>
5 H2O + 4 K2C2O4 + 2 KMnO4 = Mn2O3 + 10 KOH + 8 CO2
Ca(OH)2 + HCOOH = CaO3CH2 + H2O =>
Ca(OH)2 + HCOOH = CaO3CH2 + H2O
CoCl2(aq) + Na2S(aq) = CoS + NaCl =>
CoCl2(aq) + Na2S(aq) = CoS + 2 NaCl
Cu3(PO4) + HCl = CuCl + H3PO4 =>
Cu3(PO4) + 3 HCl = 3 CuCl + H3PO4
C3H8S(l) + O2(g) = SO2 + CO2 + H2O =>
C3H8S(l) + 6 O2(g) = SO2 + 3 CO2 + 4 H2O
NaOH(aq) + BaCl2(aq) = Ba(OH)2(aq) + NaCl(s) =>
2 NaOH(aq) + BaCl2(aq) = Ba(OH)2(aq) + 2 NaCl(s)
B2H6 = B10H14 + H2 =>
5 B2H6 = B10H14 + 8 H2
C4H10S + O2 = CO2 + H2O + SO2 =>
2 C4H10S + 15 O2 = 8 CO2 + 10 H2O + 2 SO2
Sn(OH)2 + Pb2 = Pb(OH)2 + Sn2 =>
2 Sn(OH)2 + Pb2 = 2 Pb(OH)2 + Sn2
BaCl2 + HCl = BaHCl3 =>
BaCl2 + HCl = BaHCl3
C3H5(OH)3 = C3H6O + H2O + HCOOH =>
5 C3H5(OH)3 = 4 C3H6O + 5 H2O + 3 HCOOH
Fr(g) + F(g) = FrF(g) =>
Fr(g) + F(g) = FrF(g)
K2Cr2O7 + NH3 + H2O = Cr(OH)2 + NO2 + KOH =>
7 K2Cr2O7 + 8 NH3 + 9 H2O = 14 Cr(OH)2 + 8 NO2 + 14 KOH
C2H5OH + HCOOH = C3H6O2 + H2O =>
C2H5OH + HCOOH = C3H6O2 + H2O
(NH4)(NO3) + Na3(PO4) = (NH4)3(PO4) + Na(NO3) =>
3(NH4)(NO3) + Na3(PO4) = (NH4)3(PO4) + 3 Na(NO3)
KI + I2 = I3K =>
KI + I2 = I3K
NaOCl + CaCl2 = NaCl(s) + CaO + Cl2 =>
NaOCl + CaCl2 = NaCl(s) + CaO + Cl2
Ba + FrF = Fr + BaF2 =>
Ba + 2 FrF = 2 Fr + BaF2
FeBr3 + KI = FeBr2 + I2 + KBr =>
2 FeBr3 + 2 KI = 2 FeBr2 + I2 + 2 KBr
S4 + H2 = H2S =>
S4 + 4 H2 = 4 H2S
C7H17 + O2 = CO2 + H2O =>
4 C7H17 + 45 O2 = 28 CO2 + 34 H2O
P2S + O2 = P4O10 + SO2 =>
2 P2S + 7 O2 = P4O10 + 2 SO2
K2Cr2O7 + NH3 + H2SO4 = K2SO4Cr2(SO4)3 + N2 + H2O =>
K2Cr2O7 + 2 NH3 + 4 H2SO4 = K2SO4Cr2(SO4)3 + N2 + 7 H2O
C10H10 + S = C + H2S =>
C10H10 + 5 S = 10 C + 5 H2S
H2(g) + Br2(g) = H2Br2(g) =>
H2(g) + Br2(g) = H2Br2(g)
NH4NO3(s) = N2 + O2 + H2O =>
2 NH4NO3(s) = 2 N2 + O2 + 4 H2O
H3PO4 + Pt = PO4 + PtH3 =>
H3PO4 + Pt = PO4 + PtH3
Zn(OH)2 + (NH3H2O) = [Zn(NH3)4](OH)2 + H2O =>
Zn(OH)2 + 4(NH3H2O) = [Zn(NH3)4](OH)2 + 4 H2O
Ca(OH)2 + Cu(NO3)2 = Ca(NO3)2 + Cu(OH)2 =>
Ca(OH)2 + Cu(NO3)2 = Ca(NO3)2 + Cu(OH)2
Sb4O5Cl2(s) = O3Sb2 + Cl3Sb =>
3 Sb4O5Cl2(s) = 5 O3Sb2 + 2 Cl3Sb
C2O4{2-} = CO2{-}3 =>
C2O4{2-} = 2 CO2{-}3
Mg + Zn(NO3)2 = Mg(NO3)2 + Zn =>
Mg + Zn(NO3)2 = Mg(NO3)2 + Zn
KI + HCl = KCl + I2 + H2 =>
2 KI + 2 HCl = 2 KCl + I2 + H2
MgO + AlCl3 = MgCl2 + Al2O3 =>
3 MgO + 2 AlCl3 = 3 MgCl2 + Al2O3
Fe(OH)2 + KOH + Br2 = K2FeO3 + KBr + H2O =>
Fe(OH)2 + 4 KOH + Br2 = K2FeO3 + 2 KBr + 3 H2O
H2S + Cl2 = S + H{+} + Cl{-} =>
H2S + Cl2 = S + 2 H{+} + 2 Cl{-}
Co + H = CoH3 =>
Co + 3 H = CoH3
CoS + Cl{-} + NO3{-} + H{+} = CoCl2 + NO + H2O + S =>
3 CoS + 6 Cl{-} + 2 NO3{-} + 8 H{+} = 3 CoCl2 + 2 NO + 4 H2O + 3 S
K3Fe(CN)6 + Cr2O3 + KOH = K4Fe(CN)6 + K2CrO4 + H3O =>
7 K3Fe(CN)6 + 2 Cr2O3 + 15 KOH = 7 K4Fe(CN)6 + 4 K2CrO4 + 5 H3O
N + H3 = NH3 =>
N + H3 = NH3
CuZn2 + HCl = ZnCl2 + H2 + Cu =>
CuZn2 + 4 HCl = 2 ZnCl2 + 2 H2 + Cu
N + H = H2N4H =>
4 N + 3 H = H2N4H
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