| Équations équilibrées la veille | Équations équilibrées le lendemain |
3 H2S + 2 Ag(OH)3 = Ag2S3 + 6 H2O
Fe2S3 = Fe + S8 =>
8 Fe2S3 = 16 Fe + 3 S8
CaCO3 + HCH3CO2 = Ca(CH3CO2)2 + H2O + CO2 =>
CaCO3 + 2 HCH3CO2 = Ca(CH3CO2)2 + H2O + CO2
KClO3 = KCl + O2 =>
2 KClO3 = 2 KCl + 3 O2
Fe + Na2O = FeO + Na =>
Fe + Na2O = FeO + 2 Na
FeCl3 + Na2SO3 + H2O = NaCl + FeCl2 + H2SO4 =>
2 FeCl3 + Na2SO3 + H2O = 2 NaCl + 2 FeCl2 + H2SO4
P + Cl2 = PCl5 =>
2 P + 5 Cl2 = 2 PCl5
Cu2 + S = CuS =>
Cu2 + 2 S = 2 CuS
KHSO4 + NaOH = KOH + NaHSO4 =>
KHSO4 + NaOH = KOH + NaHSO4
Ba(OH)2 + H2(SO4) = Ba(SO4) + H(OH) =>
Ba(OH)2 + H2(SO4) = Ba(SO4) + 2 H(OH)
KNO2 + Cl2 + H2O = KNO3 + HCl =>
KNO2 + Cl2 + H2O = KNO3 + 2 HCl
Cu(NO3)2 + KHS = Cu(HS)2 + KNO3 =>
Cu(NO3)2 + 2 KHS = Cu(HS)2 + 2 KNO3
NaI(aq) + Cl2(l) = I2(s) + NaCl(aq) =>
2 NaI(aq) + Cl2(l) = I2(s) + 2 NaCl(aq)
Cu(OH)2 + HCl = CuCl2 + H2O =>
Cu(OH)2 + 2 HCl = CuCl2 + 2 H2O
KI + Fe = KFe + I2 =>
2 KI + 2 Fe = 2 KFe + I2
CH3COOH + NaOH + H2O = C2H9NaO5 =>
CH3COOH + NaOH + 2 H2O = C2H9NaO5
HF + Fe(ClO4)3 = HClO4 + FeF3 =>
3 HF + Fe(ClO4)3 = 3 HClO4 + FeF3
KJ + H2SO4 = J2 + SO2 + K2SO4 + H2O =>
2 KJ + 2 H2SO4 = J2 + SO2 + K2SO4 + 2 H2O
P + Cl2 = PCl5 =>
2 P + 5 Cl2 = 2 PCl5
LiNO3 + Ag = AgNO3 + Li =>
LiNO3 + Ag = AgNO3 + Li
MnCO3 + H3PO4 = Mn(H2PO4)2 + H2O + CO2 =>
MnCO3 + 2 H3PO4 = Mn(H2PO4)2 + H2O + CO2
Ag + HCl = AgCl + H2 =>
2 Ag + 2 HCl = 2 AgCl + H2
H3PO4 + Ca(OH)2 = CaHPO4 + H2O =>
H3PO4 + Ca(OH)2 = CaHPO4 + 2 H2O
Pb + NHO3 = Pb(NO3)2 + NO2 + H2O =>
Pb + 4 NHO3 = Pb(NO3)2 + 2 NO2 + 2 H2O
HOCl = HClO3 + HCl =>
3 HOCl = HClO3 + 2 HCl
C5H8N4O12 = H2O + CO2 + CO + N2 =>
C5H8N4O12 = 4 H2O + 3 CO2 + 2 CO + 2 N2
BaCl2 + (NH4)2CO3 = BaCO3 + NH4Cl =>
BaCl2 + (NH4)2CO3 = BaCO3 + 2 NH4Cl
Zn + Ca(OH)2 = Zn(OH)2 + Ca =>
Zn + Ca(OH)2 = Zn(OH)2 + Ca
Fe(III)CO3 = Fe(III)O + CO2 =>
Fe(III)CO3 = Fe(III)O + CO2
Co(NO3)2 + NaSCN = Co(SCN)2 + NaNO3 =>
Co(NO3)2 + 2 NaSCN = Co(SCN)2 + 2 NaNO3
Cr + HNO3 = Cr(NO3)3 + N2 + H2O =>
10 Cr + 36 HNO3 = 10 Cr(NO3)3 + 3 N2 + 18 H2O
Cu + NaOH + H2O = Na[Cu(OH)2] + H2 =>
2 Cu + 2 NaOH + 2 H2O = 2 Na[Cu(OH)2] + H2
CsI + NaCl = CsCl + NaI =>
CsI + NaCl = CsCl + NaI
Fe + HNO3 = Fe(NO3)2 + NO + H2O =>
3 Fe + 8 HNO3 = 3 Fe(NO3)2 + 2 NO + 4 H2O
AlCl3 + Na2S = Al2S3 + NaCl =>
2 AlCl3 + 3 Na2S = Al2S3 + 6 NaCl
C6H5CH(OH)CH3 + K2Cr2O7 + H2SO4 = Cr2(SO4)3 + K2SO4 + C6H5COCH3 + H2O =>
3 C6H5CH(OH)CH3 + K2Cr2O7 + 4 H2SO4 = Cr2(SO4)3 + K2SO4 + 3 C6H5COCH3 + 7 H2O
Zn + Pb(NO3)2 = Zn(NO3)2 + Pb =>
Zn + Pb(NO3)2 = Zn(NO3)2 + Pb
C12H22O11(s) + H2O(l) = C2H6O(l) + CO2(g) =>
C12H22O11(s) + H2O(l) = 4 C2H6O(l) + 4 CO2(g)
NiSO4(aq) + Na2CO3(aq) = NiCO3(s) + Na2SO4(aq) =>
NiSO4(aq) + Na2CO3(aq) = NiCO3(s) + Na2SO4(aq)
Mg + O2 = MgO =>
2 Mg + O2 = 2 MgO
LiOH + NH4H2PO4 = Li3PO4 + NH3 + H2O =>
3 LiOH + NH4H2PO4 = Li3PO4 + NH3 + 3 H2O
N8 + O2 = NO3 =>
N8 + 12 O2 = 8 NO3
Cu(s) + H2SO4 = CuSO4 + H2 =>
Cu(s) + H2SO4 = CuSO4 + H2
H3AsO4 + H2SO4 + NO2 + H2O = As2S3 + HNO3 =>
2 H3AsO4 + 3 H2SO4 + 28 NO2 + 8 H2O = As2S3 + 28 HNO3
Xe(g) + F2(g) = XeF4(g) =>
Xe(g) + 2 F2(g) = XeF4(g)
Mo + H2SO4 = Mo2(SO4)3 + H2 =>
2 Mo + 3 H2SO4 = Mo2(SO4)3 + 3 H2
Cd + H2S = CdS2 + H2 =>
Cd + 2 H2S = CdS2 + 2 H2
Cu(OH)2 + HClO4 = CuClO4 + H(OH)2 =>
Cu(OH)2 + HClO4 = CuClO4 + H(OH)2
Sr + N2 = Sr3N2 =>
3 Sr + N2 = Sr3N2
Mn{2+} + H2O + Cl2 = MnO2 + Cl{-)+H{+} =>
Mn{2+} + 2 H2O + Cl2 = MnO2 + 2 Cl{-)+4H{+}
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