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2 CaS + 2 H2O = Ca(HS)2 + Ca(OH)2
C + O2(g) = CO =>
2 C + O2(g) = 2 CO
CaC2(s) + H2O = C2H2(g) + Ca(OH)2 =>
CaC2(s) + 2 H2O = C2H2(g) + Ca(OH)2
MgCO3(heat) = MgO(s) + CO2(g) =>
MgCO3(heat) = MgO(s) + CO2(g)
CrCl2 + K2CO3 = CrCO3 + KCl =>
CrCl2 + K2CO3 = CrCO3 + 2 KCl
Fe + Cu(NO2)2 = Fe(NO2)3 + Cu =>
2 Fe + 3 Cu(NO2)2 = 2 Fe(NO2)3 + 3 Cu
CaO + H3PO3 = CaHPO3 + H2O =>
CaO + H3PO3 = CaHPO3 + H2O
LiN + H2O = Li + OH + NH3 =>
LiN + 3 H2O = Li + 3 OH + NH3
HNO3(aq) + Li2S(aq) = H2S(g) + LiNO3 =>
2 HNO3(aq) + Li2S(aq) = H2S(g) + 2 LiNO3
Cu2S + KOH = CuOH + K2S =>
Cu2S + 2 KOH = 2 CuOH + K2S
Zn + (cc)H2SO4 = ZnSO4 + SO2 + H2O =>
Zn + 2(cc)H2SO4 = ZnSO4 + SO2 + 2 H2O
Cu3(PO4)2 + Fe(OH)3 = FeCu3 + (PO4)2(OH)3 =>
Cu3(PO4)2 + Fe(OH)3 = FeCu3 + (PO4)2(OH)3
AgNo3 + Po4 = Ag3Po4 + No3 =>
3 AgNo3 + Po4 = Ag3Po4 + 3 No3
(CuOH)2CO3 = CuO + CO2 + H2O =>
(CuOH)2CO3 = 2 CuO + CO2 + H2O
BaSO3 + (NH4)3AsO = Ba3(AsO)2 + (NH4)2SO3 =>
3 BaSO3 + 2(NH4)3AsO = Ba3(AsO)2 + 3(NH4)2SO3
Li + RbI = LiI2 + Rb2 =>
Li + 2 RbI = LiI2 + Rb2
NaCl + AgCl = AgNa + Cl2 =>
NaCl + AgCl = AgNa + Cl2
CuOH + HBr = CuBr + HOH =>
CuOH + HBr = CuBr + HOH
Zn + H2(SO4) = Zn(SO4) + H2S + H2O =>
4 Zn + 5 H2(SO4) = 4 Zn(SO4) + H2S + 4 H2O
NH4OH + Co2 = Co(OH)2 + NH4 =>
4 NH4OH + Co2 = 2 Co(OH)2 + 4 NH4
ClO{-} + S2O3{2-} + OH{-} = Cl{-} + SO4{2-} + H{+} =>
4 ClO{-} + S2O3{2-} + OH{-} = 4 Cl{-} + 2 SO4{2-} + H{+}
CoCl3 + KOH = KCl + Co(OH)3 =>
CoCl3 + 3 KOH = 3 KCl + Co(OH)3
Ca(OH)2 + H3PO4 = Ca3(PO4)2 + H2O =>
3 Ca(OH)2 + 2 H3PO4 = Ca3(PO4)2 + 6 H2O
Zn + H2(SO4) = Zn(SO4) + H =>
Zn + H2(SO4) = Zn(SO4) + 2 H
Ni + Ni(NO3)2 = Ni2(NO3) =>
3 Ni + Ni(NO3)2 = 2 Ni2(NO3)
Ca2SiO4 = Ca + Si + O =>
Ca2SiO4 = 2 Ca + Si + 4 O
HC2H3O2 + NaHSO3 = H2O + SO2 + NaC2H3O2 =>
HC2H3O2 + NaHSO3 = H2O + SO2 + NaC2H3O2
Na2CO3 + CaCl2 = NaCl + CaCO3 =>
Na2CO3 + CaCl2 = 2 NaCl + CaCO3
KI(aq) + BaCl2(aq) = KCl(s) + BaI2 =>
2 KI(aq) + BaCl2(aq) = 2 KCl(s) + BaI2
KCN(aq) + HCl(aq) = KCl(aq) + HCN(g) =>
KCN(aq) + HCl(aq) = KCl(aq) + HCN(g)
Sb2S5 + Na2S = NaSbS3 =>
Sb2S5 + Na2S = 2 NaSbS3
C02 + H2O = CO + H2 =>
C02 + 2 H2O = 2 CO + 2 H2
Mg(s) + HCl(aq) = Mg{2+} + Cl{2-} + H2 =>
2 Mg(s) + 2 HCl(aq) = 2 Mg{2+} + 2 Cl{2-} + H2
Na + H2SO3 = Na2SO3 + H2 =>
2 Na + H2SO3 = Na2SO3 + H2
P4 + KMnO4 + H2SO4 = KH2PO4 + MnSO4 =>
P4 + 4 KMnO4 + 4 H2SO4 = 4 KH2PO4 + 4 MnSO4
C7H5NO3 + C3H6O + OH{-} = C16H10N2O2 + CH3CO2{-} + H2O =>
2 C7H5NO3 + 2 C3H6O + 2 OH{-} = C16H10N2O2 + 2 CH3CO2{-} + 4 H2O
C6H5CH3 + KMnO4 = C6H5COOK + MnO2 + KOH + H2O =>
C6H5CH3 + 2 KMnO4 = C6H5COOK + 2 MnO2 + KOH + H2O
Cu(NO3)2(aq) + NaI(aq) = CuI(s) + Na(NO3)2(aq) =>
Cu(NO3)2(aq) + NaI(aq) = CuI(s) + Na(NO3)2(aq)
NaCl + I2 = NaI + Cl2 =>
2 NaCl + I2 = 2 NaI + Cl2
PbO2 + NaOH + Cr2(SO4)3 = Na2[Pb(OH)4] + Na2SO4 + Na2CrO4 + H2O =>
3 PbO2 + 16 NaOH + Cr2(SO4)3 = 3 Na2[Pb(OH)4] + 3 Na2SO4 + 2 Na2CrO4 + 2 H2O
CUS + HNO3 = CU(NO3)2 + S + NO + H2O =>
3 CUS + 8 HNO3 = 3 CU(NO3)2 + 3 S + 2 NO + 4 H2O
C15H30O2 + O2 = CO + H2O =>
C15H30O2 + 14 O2 = 15 CO + 15 H2O
Br2F3 = Br + F =>
Br2F3 = 2 Br + 3 F
Zn + OH{-} + H2O = [Zn(OH)4]2{-} + H2 =>
4 Zn + 2 OH{-} + 14 H2O = 2[Zn(OH)4]2{-} + 7 H2
FeI2 + Cl2 = FeCl3 + I =>
2 FeI2 + 3 Cl2 = 2 FeCl3 + 4 I
Pb(CH3COO)2 + (NH4)2S = PbS + NH4CH3COO =>
Pb(CH3COO)2 + (NH4)2S = PbS + 2 NH4CH3COO
As + F = AsF =>
As + F = AsF
NH4ClO4(s) = N2 + Cl2 + O2 + H2O =>
2 NH4ClO4(s) = N2 + Cl2 + 2 O2 + 4 H2O
Co(s) + S8(s) = Co2S3(s) =>
16 Co(s) + 3 S8(s) = 8 Co2S3(s)
As4O6 + HCl = AsCl3 + HOH =>
As4O6 + 12 HCl = 4 AsCl3 + 6 HOH
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