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4 Cr + 3 SnCl4 = 4 CrCl3 + 3 Sn
NaCl + H2SO4 = Na2SO4 + HCl =>
2 NaCl + H2SO4 = Na2SO4 + 2 HCl
*H3PO4 + KOH = K3PO4 + H2O =>
*H3PO4 + 3 KOH = K3PO4 + 3 H2O
Zn + NaOH = Na2Zn(OH)2 =>
Zn + 2 NaOH = Na2Zn(OH)2
V2O5 + HI = VOI2 + I2 + H2O =>
V2O5 + 6 HI = 2 VOI2 + I2 + 3 H2O
Ag2C2 + CH3Cl = C2(CH3)2 + Ag2Cl2 =>
Ag2C2 + 2 CH3Cl = C2(CH3)2 + Ag2Cl2
C3H7OH + OH = CO2 + H2O =>
C3H7OH + 18 OH = 3 CO2 + 13 H2O
Ca(CH3COO)2 + AgNO3 = Ca(NO3)2 + Ag(CH3COO) =>
Ca(CH3COO)2 + 2 AgNO3 = Ca(NO3)2 + 2 Ag(CH3COO)
K2SO3 = K2O + SO2 =>
K2SO3 = K2O + SO2
KMnO4 + HCl = KCl + MnCl2 + H2O + Cl2 =>
2 KMnO4 + 16 HCl = 2 KCl + 2 MnCl2 + 8 H2O + 5 Cl2
FeSO4 + KMnO4 + H2SO4 = Fe2(SO4)3 + MnSO4 + K2SO4 + H2O =>
10 FeSO4 + 2 KMnO4 + 8 H2SO4 = 5 Fe2(SO4)3 + 2 MnSO4 + K2SO4 + 8 H2O
CO2 + NH3 + H = C5H7O2N + H2O =>
5 CO2 + NH3 + 20 H = C5H7O2N + 8 H2O
Cr(OH)3 + K3(OH)3 = K3[Cr(OH)6] =>
Cr(OH)3 + K3(OH)3 = K3[Cr(OH)6]
Na2CO3 + ZnO = Na2O + ZnCO3 =>
Na2CO3 + ZnO = Na2O + ZnCO3
CuO + FeO = CuFeO2 =>
CuO + FeO = CuFeO2
Fe2 + (SO4)3 + LiOH = Fe(OH)3 + Li2SO4 =>
Fe2 + (SO4)3 + 6 LiOH = 2 Fe(OH)3 + 3 Li2SO4
HCN + Zn(OH)2 = Zn(CN)2 + H2O =>
2 HCN + Zn(OH)2 = Zn(CN)2 + 2 H2O
NaCl = Na + Cl2 =>
2 NaCl = 2 Na + Cl2
H2S + NO3{-} + H{+} = NO + SO4{2-} + H2O =>
3 H2S + 8 NO3{-} + 2 H{+} = 8 NO + 3 SO4{2-} + 4 H2O
K2SO3 = K2O + SO2 =>
K2SO3 = K2O + SO2
HIO3 = H2O + I2O5 =>
2 HIO3 = H2O + I2O5
K2SO4 + K2CrO7 + H2SO4 = Cr2(SO4)3 + H2O + K2S2O8 =>
7 K2SO4 + 2 K2CrO7 + 14 H2SO4 = Cr2(SO4)3 + 14 H2O + 9 K2S2O8
Fe + CuSO4 = FeSO4Cu =>
Fe + CuSO4 = FeSO4Cu
Ca(HS)2 + HNO3 = Ca(NO3)2 + S + NO2 + H2O =>
Ca(HS)2 + 6 HNO3 = Ca(NO3)2 + 2 S + 4 NO2 + 4 H2O
SO2 + O2 = SO3 =>
2 SO2 + O2 = 2 SO3
NH3 + F2 = N2F4 + HF =>
2 NH3 + 5 F2 = N2F4 + 6 HF
CuS + K2SO3 = CuSO4 + K2S =>
3 CuS + 4 K2SO3 = 3 CuSO4 + 4 K2S
NH3 + H2O + K2SO4 = (NH4)2SO4 + KOH =>
2 NH3 + 2 H2O + K2SO4 = (NH4)2SO4 + 2 KOH
Ag2(SO4) + NaI = AgI + Na2(SO4) =>
Ag2(SO4) + 2 NaI = 2 AgI + Na2(SO4)
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
NiSO4 + (NH4)2S2O8 + (NH4)6Mo7O24 + NH4OH = (NH4)6NiMo9O32 + H2O + (NH4)2SO4 =>
7 NiSO4 + 7(NH4)2S2O8 + 9(NH4)6Mo7O24 + 16 NH4OH = 7(NH4)6NiMo9O32 + 8 H2O + 21(NH4)2SO4
AgCl + NH4OH = [Ag(NH3)2] + Cl + H2O =>
AgCl + 2 NH4OH = [Ag(NH3)2] + Cl + 2 H2O
Pb(OH)4 + H2CO3 + H3PO4 = Pb2(CO3)(PO4)2 + H2O =>
2 Pb(OH)4 + H2CO3 + 2 H3PO4 = Pb2(CO3)(PO4)2 + 8 H2O
As2O3 + KI + HCl = AsI3 + KCl + H2O =>
As2O3 + 6 KI + 6 HCl = 2 AsI3 + 6 KCl + 3 H2O
CO + O2 = CO2 =>
2 CO + O2 = 2 CO2
SnCl4 + TiSO4 + H2SO4 = Ti2(SO4)3 + SnCl2 + HCl =>
SnCl4 + 2 TiSO4 + H2SO4 = Ti2(SO4)3 + SnCl2 + 2 HCl
Ca + Hg(NO3)2 = Hg + Ca(NO3)2 =>
Ca + Hg(NO3)2 = Hg + Ca(NO3)2
MnO2 + HCl = MnCl2 + H2O + Cl2 =>
MnO2 + 4 HCl = MnCl2 + 2 H2O + Cl2
PCl3 + NaOH = Na2PO4 + NaCl + H2O + PH3 =>
3 PCl3 + 13 NaOH = 2 Na2PO4 + 9 NaCl + 5 H2O + PH3
FeS + O2 = Fe2O3 + SO2 =>
4 FeS + 7 O2 = 2 Fe2O3 + 4 SO2
KCl + HClO = KClO + HCl =>
KCl + HClO = KClO + HCl
Mg(NO3)2 + EDTA = MgEDTA + NO3 =>
Mg(NO3)2 + EDTA = MgEDTA + 2 NO3
Mg(s) + HCl(aq) = H2(g) + MgCl2(aq) =>
Mg(s) + 2 HCl(aq) = H2(g) + MgCl2(aq)
Ca(OH)2 + H3PO4 = Ca3(PO4)2 + H2O =>
3 Ca(OH)2 + 2 H3PO4 = Ca3(PO4)2 + 6 H2O
HCl + BaSO3 = BaCl2 + SO2 + H2O =>
2 HCl + BaSO3 = BaCl2 + SO2 + H2O
C6H12 + O2 = CO + H2O =>
C6H12 + 6 O2 = 6 CO + 6 H2O
PbOH2SO4 = PbSO4H2O =>
PbOH2SO4 = PbSO4H2O
H2 + Ta2O3 = Ta + H2O =>
3 H2 + Ta2O3 = 2 Ta + 3 H2O
K + I2 = KI = ,1,2 =>
2 K + I2 = 2 KI
HCl + Fe2O3 = FeCl3 + H2O =>
6 HCl + Fe2O3 = 2 FeCl3 + 3 H2O
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