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4 Fe + 3 O2 = 2 Fe2O3
K2CrO4 + H2SO4 = CrO3 + KHSO4 + H2O =>
K2CrO4 + 2 H2SO4 = CrO3 + 2 KHSO4 + H2O
Mg(s) + ZnSO4(s) = MgSO4(s) + Zn(s) =>
Mg(s) + ZnSO4(s) = MgSO4(s) + Zn(s)
HCOONa + KMnO4 + H2O = MnO2 + KOH + CO2 + NaOH =>
3 HCOONa + 2 KMnO4 + H2O = 2 MnO2 + 2 KOH + 3 CO2 + 3 NaOH
SO4 + Zn = ZnSO4 =>
SO4 + Zn = ZnSO4
Li2CO3 + MnO2 = Li2MnO3 + CO2 =>
Li2CO3 + MnO2 = Li2MnO3 + CO2
In(s) + I2(s) = In2I6(s) =>
2 In(s) + 3 I2(s) = In2I6(s)
CoS + HNO3 + HCl = S + NO + Co{2+} + Cl{-} + H2O =>
3 CoS + 2 HNO3 + 6 HCl = 3 S + 2 NO + 3 Co{2+} + 6 Cl{-} + 4 H2O
H2SO4 + KAl(OH)4 + H2O = KAl(SO4)2*12H2O =>
2 H2SO4 + KAl(OH)4 + 8 H2O = KAl(SO4)2*12H2O
CrCl3 + KOH + Br2 = KCrO4 + KBr + H2O + KCl =>
CrCl3 + 8 KOH + 2 Br2 = KCrO4 + 4 KBr + 4 H2O + 3 KCl
K20 + H2SO4 = K2SO4 + SO2 + H2O =>
K20 + 20 H2SO4 = 10 K2SO4 + 10 SO2 + 20 H2O
H3PO4 + KCN = HCN + K3PO4 =>
H3PO4 + 3 KCN = 3 HCN + K3PO4
HClO4 + KI = KCl + I2 + KClO4 + H2O =>
8 HClO4 + 8 KI = KCl + 4 I2 + 7 KClO4 + 4 H2O
H2S + SO2 = S8 + H2O =>
16 H2S + 8 SO2 = 3 S8 + 16 H2O
Sb2S5 + HNO3 = H3SbO4 + H2SO4 + NO2 + H2O =>
Sb2S5 + 40 HNO3 = 2 H3SbO4 + 5 H2SO4 + 40 NO2 + 12 H2O
Na2Cl + Pb(NO3)2 = NaNO3 + PbCl =>
Na2Cl + Pb(NO3)2 = 2 NaNO3 + PbCl
AgNO3 + H2O = AgOH + HNO3 =>
AgNO3 + H2O = AgOH + HNO3
NH4OH + HCN = NH4CN + H2O =>
NH4OH + HCN = NH4CN + H2O
Ni(NO3)2 + NH3 = Ni(NH2)2 + HNO3 =>
Ni(NO3)2 + 2 NH3 = Ni(NH2)2 + 2 HNO3
TeO2 + KOH + H2O + KO2 = K2H4TeO6 =>
3 TeO2 + 4 KOH + 4 H2O + 2 KO2 = 3 K2H4TeO6
O2 + Co3O4 + Na2CO3 = NaCoO2 + CO2 =>
O2 + 4 Co3O4 + 6 Na2CO3 = 12 NaCoO2 + 6 CO2
V2(HPO4)3 + Nb2(Cr2O7)5 + Nb2(SO4)5 + H3PO4 = V2(SO4)7 + Cr2(HPO4)3 + Nb2(HPO4)5 + H2O =>
15 V2(HPO4)3 + 4 Nb2(Cr2O7)5 + 21 Nb2(SO4)5 + 140 H3PO4 = 15 V2(SO4)7 + 20 Cr2(HPO4)3 + 25 Nb2(HPO4)5 + 140 H2O
H{+} + Cr2O7({-}2) + C2H5OH = Cr({+}3) + C2H4O + H2O =>
6 H{+} + 2 Cr2O7({-}2) + 11 C2H5OH = 4 Cr({+}3) + 11 C2H4O + 14 H2O
Ba3(PO4)2 + NiBr2 = Ni3(PO4)2 + BaBr2 =>
Ba3(PO4)2 + 3 NiBr2 = Ni3(PO4)2 + 3 BaBr2
HCNO + H2O = H3O{+} + CNO{-} =>
HCNO + H2O = H3O{+} + CNO{-}
La2O3(s) + H2O(t) = La(OH)3(aq) =>
La2O3(s) + 3 H2O(t) = 2 La(OH)3(aq)
Ag + (NH4)2SO4 = Ag2SO4 + NH4 =>
2 Ag + (NH4)2SO4 = Ag2SO4 + 2 NH4
Na2CO3 + AgNO3 = CO2 + Na2NO4 + Ag =>
Na2CO3 + AgNO3 = CO2 + Na2NO4 + Ag
K(s) + H2O(l) = KOH(aq) + H2(g) =>
2 K(s) + 2 H2O(l) = 2 KOH(aq) + H2(g)
MgBr2(aq) + Pb(NO3)2(aq) = Mg(NO3)2(aq) + PbBr2(aq) =>
MgBr2(aq) + Pb(NO3)2(aq) = Mg(NO3)2(aq) + PbBr2(aq)
CH4 + NaOH = CH3 + NaOH2 =>
CH4 + NaOH = CH3 + NaOH2
Sn(s) + AgNO3(aq) = Sn(NO3)4 + Ag(s) =>
Sn(s) + 4 AgNO3(aq) = Sn(NO3)4 + 4 Ag(s)
HCNO + H2O = NH3 + CO2 =>
HCNO + H2O = NH3 + CO2
(Ca(NO3)2) + NaCl = NaNO3 + CaCl2 =>
(Ca(NO3)2) + 2 NaCl = 2 NaNO3 + CaCl2
PbS + H2O2 = PbSO4 + H2 =>
PbS + 2 H2O2 = PbSO4 + 2 H2
CH3COOH + C3H8O = C5H10O2 + H2O =>
CH3COOH + C3H8O = C5H10O2 + H2O
H2[TiCl6] + H2O2 = H2[Ti(O2)Cl4] + HCl =>
H2[TiCl6] + H2O2 = H2[Ti(O2)Cl4] + 2 HCl
NH4ClO4 = N2 + Cl2 + O2 + H2O =>
2 NH4ClO4 = N2 + Cl2 + 2 O2 + 4 H2O
CaCO3 + H2SO4 = CaSO4 + H2O + CO2 =>
CaCO3 + H2SO4 = CaSO4 + H2O + CO2
HNO3 + Sr(OH)2 = Sr(NO3)2 + H2O =>
2 HNO3 + Sr(OH)2 = Sr(NO3)2 + 2 H2O
Fe(NO3)2 + K3[Fe(CN)6] = Fe3[Fe(CN)6]2 + KNO3 =>
3 Fe(NO3)2 + 2 K3[Fe(CN)6] = Fe3[Fe(CN)6]2 + 6 KNO3
Na3PO4*12H2O + Zn(C2H3O2)2 = Zn3(PO4)2*4H2O + NaC2H3O2 + H2O =>
2 Na3PO4*12H2O + 3 Zn(C2H3O2)2 = Zn3(PO4)2*4H2O + 6 NaC2H3O2 + 20 H2O
Na2S + CaSO4 = Na2SO4 + Ca + S =>
Na2S + CaSO4 = Na2SO4 + Ca + S
Mg + NO2 = MgO2 + N2 =>
2 Mg + 2 NO2 = 2 MgO2 + N2
H2O + XeO3 = H4XeO6 + H =>
3 H2O + XeO3 = H4XeO6 + 2 H
Na2CO3 + CoCl2 + H2O = Co(OH)2 + NaCl + H2CO3 =>
Na2CO3 + CoCl2 + 2 H2O = Co(OH)2 + 2 NaCl + H2CO3
K2SO4 + KOH = K3O + SO4H =>
K2SO4 + KOH = K3O + SO4H
ZnZnCl2 = Zn2Cl2 =>
ZnZnCl2 = Zn2Cl2
NaSO4 + C + CaCO3 = Na2CO3 + CaS + CO2 =>
4 NaSO4 + 9 C + 4 CaCO3 = 2 Na2CO3 + 4 CaS + 11 CO2
C2H5CH2OH + KMnO4 + H2SO4 = C2H5COOH + MnSO4 + K2SO4 + H2O =>
5 C2H5CH2OH + 4 KMnO4 + 6 H2SO4 = 5 C2H5COOH + 4 MnSO4 + 2 K2SO4 + 11 H2O
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