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2 Pb(s) + 2 H2O(l) = 2 PbOH(aq) + H2(g)
H2S + KMnO4 = K2SO4 + MnO2 + H2 =>
H2S + 2 KMnO4 = K2SO4 + 2 MnO2 + H2
AgNO3 + NaOH = Ag2O + NaNO3 + H2O =>
2 AgNO3 + 2 NaOH = Ag2O + 2 NaNO3 + H2O
Al(NO3)3 + C6H8O7 = Al2O3 + CO2 + H2O + NO2 =>
6 Al(NO3)3 + C6H8O7 = 3 Al2O3 + 6 CO2 + 4 H2O + 18 NO2
Fe(NO3)3 + KOH = Fe(OH)3 + KNO3 =>
Fe(NO3)3 + 3 KOH = Fe(OH)3 + 3 KNO3
H2S + O2 = SO2 + H2O3 =>
2 H2S + 5 O2 = 2 SO2 + 2 H2O3
Cr2O7{-2} + H{+} + Al = Cr{+3} + Al{+3} + H2O =>
Cr2O7{-2} + 14 H{+} + 2 Al = 2 Cr{+3} + 2 Al{+3} + 7 H2O
KAlO2 + H2O = K[Al(OH)4] =>
KAlO2 + 2 H2O = K[Al(OH)4]
Ca3(PO4)2 + Ca(H2PO4)2*H2O + H2O = CaHPO4*2H2O =>
Ca3(PO4)2 + Ca(H2PO4)2*H2O + 7 H2O = 4 CaHPO4*2H2O
H2P = PH3 + H2P4 =>
10 H2P = 6 PH3 + H2P4
SnCl2(aq) + Co(s) = CoCl2 + Sn =>
SnCl2(aq) + Co(s) = CoCl2 + Sn
(NH4)2S + KOH = NH4OH + K2S =>
(NH4)2S + 2 KOH = 2 NH4OH + K2S
Zn(OH)2 + LiOH = Li2(Zn(OH)4) =>
Zn(OH)2 + 2 LiOH = Li2(Zn(OH)4)
Cu + NaOH + H2O = Na2[Cu(OH)4] + H2 =>
Cu + 2 NaOH + 2 H2O = Na2[Cu(OH)4] + H2
Fe + Na2O = FeO + Na =>
Fe + Na2O = FeO + 2 Na
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
C6H8O7 + NaOH = C6H5O7Na3 + H2O =>
C6H8O7 + 3 NaOH = C6H5O7Na3 + 3 H2O
C6H14N4O2 + O2 = CO2 + H2O + N2 =>
2 C6H14N4O2 + 17 O2 = 12 CO2 + 14 H2O + 4 N2
HCOONa + H2SO4 = CO + H2O + Na2SO4 =>
2 HCOONa + H2SO4 = 2 CO + 2 H2O + Na2SO4
Hg(NO3)2 + H2S = HgS + H2(NO3)2 =>
Hg(NO3)2 + H2S = HgS + H2(NO3)2
CuO + MoO3 = Cu3Mo2O9 =>
3 CuO + 2 MoO3 = Cu3Mo2O9
NH3(g) + O2(g) = NO + H2O(g) =>
4 NH3(g) + 5 O2(g) = 4 NO + 6 H2O(g)
CuCl + (NH4)3PO4 = CuPO4 + (NH4)3Cl =>
CuCl + (NH4)3PO4 = CuPO4 + (NH4)3Cl
K + O2 = K2O =>
4 K + O2 = 2 K2O
BeCl2(s) + O2(g) = Be(ClO3)2(s) =>
BeCl2(s) + 3 O2(g) = Be(ClO3)2(s)
Al4C3 + H2O = CH4 + AlO3H3 =>
Al4C3 + 12 H2O = 3 CH4 + 4 AlO3H3
HI + Fe = FeI2 + H =>
2 HI + Fe = FeI2 + 2 H
CuSO4(aq) + NH4OH(aq) = [Cu(NH3)4]SO4(aq) + H2O(l) =>
CuSO4(aq) + 4 NH4OH(aq) = [Cu(NH3)4]SO4(aq) + 4 H2O(l)
Cr2O7{-2} + SO3{-2} + H{+} = Cr{+3} + HSO4{-} + H2O =>
Cr2O7{-2} + 3 SO3{-2} + 11 H{+} = 2 Cr{+3} + 3 HSO4{-} + 4 H2O
FeCl2 + H2SO4 = Fe2(SO4)3 + FeCl3 + SO2 + H2O =>
6 FeCl2 + 6 H2SO4 = Fe2(SO4)3 + 4 FeCl3 + 3 SO2 + 6 H2O
ClF = Cl2 + F2 =>
2 ClF = Cl2 + F2
OH{-} + MnO4{-} = MnO4{2-} + O2 + H2O =>
4 OH{-} + 4 MnO4{-} = 4 MnO4{2-} + O2 + 2 H2O
Sn + FeCl3 = SnCl2 + Fe =>
3 Sn + 2 FeCl3 = 3 SnCl2 + 2 Fe
Ca(HCO3)2 = CaO + CO2 + H2O =>
Ca(HCO3)2 = CaO + 2 CO2 + H2O
K2S = K + S2 =>
2 K2S = 4 K + S2
(NH4)3PO4 + Pb(NO3)4 = Pb3(PO4)4 + NH4NO3 =>
4(NH4)3PO4 + 3 Pb(NO3)4 = Pb3(PO4)4 + 12 NH4NO3
NH2(g) + O2(g) = N2(g) + H2O(g) =>
2 NH2(g) + O2(g) = N2(g) + 2 H2O(g)
FeSO3 + H2SO4 = Fe2(SO4)3 + SO2 + H2O =>
2 FeSO3 + 4 H2SO4 = Fe2(SO4)3 + 3 SO2 + 4 H2O
KNO2 + HNO3 = KNO3 + HNO2 =>
KNO2 + HNO3 = KNO3 + HNO2
Pb(ClO4)2 + NaF = PbF2 + NaClO4 =>
Pb(ClO4)2 + 2 NaF = PbF2 + 2 NaClO4
Na(NO3) + H2(SO4) = Na(SO4) + H2(NO3) =>
Na(NO3) + H2(SO4) = Na(SO4) + H2(NO3)
Al + NaH + H2O = NaAlO2 + H2 =>
2 Al + 2 NaH + 4 H2O = 2 NaAlO2 + 5 H2
Au + NO3 + HCl = HAuCl4 + NO2 + H2O =>
2 Au + 3 NO3 + 8 HCl = 2 HAuCl4 + 3 NO2 + 3 H2O
C8H10 + KMnO4 + H2SO4 = C8H6O2 + K2SO4 + MnSO4 + H2O =>
5 C8H10 + 8 KMnO4 + 12 H2SO4 = 5 C8H6O2 + 4 K2SO4 + 8 MnSO4 + 22 H2O
C6H10 + H2SO4 = C6H12SO4 =>
C6H10 + H2SO4 = C6H12SO4
CuCl2 + NaCN = Cu(CN)2 + NaCl =>
CuCl2 + 2 NaCN = Cu(CN)2 + 2 NaCl
CrCl2 + KMnO4 + KOH = K2CrO4 + K2MnO4 + KCl + H2O =>
CrCl2 + 4 KMnO4 + 8 KOH = K2CrO4 + 4 K2MnO4 + 2 KCl + 4 H2O
H2S + H2O = H3O + S =>
H2S + 2 H2O = 2 H3O + S
CH3CH2OH + O2(exceso) = CO2 + H2O =>
CH3CH2OH + 3 O2(exceso) = 2 CO2 + 3 H2O
N2 + Cl = NCl2 =>
N2 + 4 Cl = 2 NCl2
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