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2 Cu2O + 4 H2SO4 = 4 CuS + 4 H2O + 7 O2
CH3COONa + H2SO4 = H2COONa + CH3SO4 =>
CH3COONa + H2SO4 = H2COONa + CH3SO4
Ca(OH)2 + H3PO4 = Ca3(PO4)2 + H2O =>
3 Ca(OH)2 + 2 H3PO4 = Ca3(PO4)2 + 6 H2O
Hg + S = HgS =>
Hg + S = HgS
Na + F2 = NaF =>
2 Na + F2 = 2 NaF
CH3OOH = HCH3OO =>
CH3OOH = HCH3OO
Al2O3 + HClO4 = Al(ClO4)3 + H2O =>
Al2O3 + 6 HClO4 = 2 Al(ClO4)3 + 3 H2O
NaHCO3 + CuSO4 = CuCO3 + Na2SO4 + CO2 + H2O =>
2 NaHCO3 + CuSO4 = CuCO3 + Na2SO4 + CO2 + H2O
PhCH3 + KMnO4 + H2SO4 = PhCOOH + K2SO4 + MnSO4 + H2O =>
5 PhCH3 + 6 KMnO4 + 9 H2SO4 = 5 PhCOOH + 3 K2SO4 + 6 MnSO4 + 14 H2O
P + Cl2 = PCl3 =>
2 P + 3 Cl2 = 2 PCl3
H2S + SO2 = S + H2O =>
2 H2S + SO2 = 3 S + 2 H2O
Pb(NO3)2 + sodiumiodide = PbI2 + sodiumnitrate =>
Pb(NO3)2 + 2 NaI = PbI2 + 2 NaNO3
RhCl3 + NH4OH = Rh(OH)3 + NH4Cl =>
RhCl3 + 3 NH4OH = Rh(OH)3 + 3 NH4Cl
MnSO4 + O3 + H2O = H2SO4 + Mn2O7 =>
6 MnSO4 + 5 O3 + 6 H2O = 6 H2SO4 + 3 Mn2O7
FeO = Fe + O =>
FeO = Fe + O
Pb(OH)4 + H2CO3 + H3PO4 = Pb2(CO3)(PO4)2 + H2O =>
2 Pb(OH)4 + H2CO3 + 2 H3PO4 = Pb2(CO3)(PO4)2 + 8 H2O
C2H4 + KMnO4 + H2SO4 = HCOOH + MnSO4 + K2SO4 + H2O =>
5 C2H4 + 8 KMnO4 + 12 H2SO4 = 10 HCOOH + 8 MnSO4 + 4 K2SO4 + 12 H2O
CHCl3 + Cl2 = CCl4 + HCl2 =>
2 CHCl3 + 3 Cl2 = 2 CCl4 + 2 HCl2
C2H5NO2 + H2 = C2H5NH2 + H2O =>
C2H5NO2 + 3 H2 = C2H5NH2 + 2 H2O
Hg2Cl2 + Na2CO3 = Hg2CO3 + NaCl =>
Hg2Cl2 + Na2CO3 = Hg2CO3 + 2 NaCl
Ca(OH)2 + K2CO3 = CaCO3 + K2(OH)2 =>
Ca(OH)2 + K2CO3 = CaCO3 + K2(OH)2
ZnCl2 + CaS = CaCl2 + ZnS =>
ZnCl2 + CaS = CaCl2 + ZnS
Cl2 + Ph = PhCl3 =>
3 Cl2 + 2 Ph = 2 PhCl3
KMnO4 + HCl = KCl + MnCl2 + H2O + Cl2 =>
2 KMnO4 + 16 HCl = 2 KCl + 2 MnCl2 + 8 H2O + 5 Cl2
H3PO2 + Hg(OH)2 = Hg3(PO2)2 + H2O =>
2 H3PO2 + 3 Hg(OH)2 = Hg3(PO2)2 + 6 H2O
SnO2 + C = CO + Sn =>
SnO2 + 2 C = 2 CO + Sn
F2 + NaI = I2 + NaF =>
F2 + 2 NaI = I2 + 2 NaF
Na2[B4O5(OH)4]8H2O + NaOH + H2O2 = Na2[B2(OH)4(O2)2]6H2O + H2O =>
3 Na2[B4O5(OH)4]8H2O + 10 NaOH + 115 H2O2 = 8 Na2[B2(OH)4(O2)2]6H2O + 67 H2O
I2(l) + KBr(aq) = KI(aq) + Br =>
I2(l) + 2 KBr(aq) = 2 KI(aq) + 2 Br
NaHCO3 + HC2H3O = NaC2H3O2 + CO2 + H2O =>
5 NaHCO3 + 4 HC2H3O = 5 NaC2H3O2 + 3 CO2 + 3 H2O
Sr(OH)2 + Li2O = SrO + LiOH =>
Sr(OH)2 + Li2O = SrO + 2 LiOH
Pb2O3 + MnSO4 + H2SO4 = PbSO4 + HMnO4 + H2O =>
5 Pb2O3 + 2 MnSO4 + 8 H2SO4 = 10 PbSO4 + 2 HMnO4 + 7 H2O
Na2CO3 + H3PO4 = CO2 + H2O + Na3PO4 =>
3 Na2CO3 + 2 H3PO4 = 3 CO2 + 3 H2O + 2 Na3PO4
NaNO2 + KMnO4 = NO2 + K2MnO4 + Na2MnO4 =>
2 NaNO2 + 2 KMnO4 = 2 NO2 + K2MnO4 + Na2MnO4
Ba(NO3)2 = BaO + NO + O2 =>
2 Ba(NO3)2 = 2 BaO + 4 NO + 3 O2
C6H5COOH + CaO = (C6H5COO)2Ca + H2O =>
2 C6H5COOH + CaO = (C6H5COO)2Ca + H2O
HgSO4 + NH4NO3 = Hg(NO3)2 + (NH4)2SO4 =>
HgSO4 + 2 NH4NO3 = Hg(NO3)2 + (NH4)2SO4
SnSO4 + Na2SO4 + H2O = Sn(HSO4)2 + NaOH =>
SnSO4 + Na2SO4 + 2 H2O = Sn(HSO4)2 + 2 NaOH
LiCl + NH4H2PO4 = LiPO4 + NH4Cl + H2 =>
LiCl + NH4H2PO4 = LiPO4 + NH4Cl + H2
AlN + KOH + H2O = K(Al(OH)4) + NH3 =>
AlN + KOH + 3 H2O = K(Al(OH)4) + NH3
CH3COOH + C2H5ONa = CH3COOC2H5 + NaOH =>
CH3COOH + C2H5ONa = CH3COOC2H5 + NaOH
Ca(OH)2 + K2CO3 = CaCO3 + K2(OH)2 =>
Ca(OH)2 + K2CO3 = CaCO3 + K2(OH)2
NaC2H3O2 + Pb(NO3)2 = Na(NO3)2 + PbC2H3O2 =>
NaC2H3O2 + Pb(NO3)2 = Na(NO3)2 + PbC2H3O2
Mo2O6 + Zn + H2SO4 = Mo2O3 + ZnSO4 + H2O =>
Mo2O6 + 3 Zn + 3 H2SO4 = Mo2O3 + 3 ZnSO4 + 3 H2O
CH3COOH + C2H5ONa = CH3COOC2H5 + NaOH =>
CH3COOH + C2H5ONa = CH3COOC2H5 + NaOH
Li2S + Al(NO3)3 = Li(NO3) + Al2S3 =>
3 Li2S + 2 Al(NO3)3 = 6 Li(NO3) + Al2S3
KF(aq) + HCl(aq) = KCl + HF =>
KF(aq) + HCl(aq) = KCl + HF
SO2 + O2 = SO3 =>
2 SO2 + O2 = 2 SO3
MnSO4 + O3 + H2O = H2SO4 + Mn2O7 =>
6 MnSO4 + 5 O3 + 6 H2O = 6 H2SO4 + 3 Mn2O7
HgO = Hg + O2 =>
2 HgO = 2 Hg + O2
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