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2 SO3 + H2 = 2 HSO3
Na2S + H2SO4 = NaHSO4 + H2O + SO2 =>
Na2S + 5 H2SO4 = 2 NaHSO4 + 4 H2O + 4 SO2
Hg + CO2 = HgCO2 =>
Hg + CO2 = HgCO2
HClO4 + P4O10 = H3PO4 + Cl2O7 =>
12 HClO4 + P4O10 = 4 H3PO4 + 6 Cl2O7
CrO3 + H2S = Cr2SO4 + S + H2O =>
2 CrO3 + 2 H2S = Cr2SO4 + S + 2 H2O
NH3 + Cl2 = NCl2 + HCl =>
2 NH3 + 5 Cl2 = 2 NCl2 + 6 HCl
NaHCO3 + HF = H2CO3 + NaF =>
NaHCO3 + HF = H2CO3 + NaF
NNO3 = N2 + O3 =>
NNO3 = N2 + O3
KClO3 + Al + KOH + H2O = KCl + K3[Al(OH)6] =>
KClO3 + 2 Al + 6 KOH + 3 H2O = KCl + 2 K3[Al(OH)6]
Ba(OH)2 + NH4HSO4 = BaSO4 + NH3 + H2O =>
Ba(OH)2 + NH4HSO4 = BaSO4 + NH3 + 2 H2O
Co + HNO3 = Co(NO3)2 + N2 + H2O =>
5 Co + 12 HNO3 = 5 Co(NO3)2 + N2 + 6 H2O
P + HNO3 = NO2 + H2O + P2O5 =>
2 P + 10 HNO3 = 10 NO2 + 5 H2O + P2O5
Hg(Cl4)2 + Na2S = HgS + Na(Cl2)2 =>
Hg(Cl4)2 + Na2S = HgS + 2 Na(Cl2)2
NO + O = NO2 =>
NO + O = NO2
S8 + Cl2 = S2Cl2 =>
S8 + 4 Cl2 = 4 S2Cl2
L2H2S = S + HL =>
L2H2S = S + 2 HL
Mg + HNO3 = MgO + NO + H2O =>
3 Mg + 2 HNO3 = 3 MgO + 2 NO + H2O
K2CO3(s) + Cr(C2H3O2)3(s) = Cr2(CO3)3(s) + KC2H3O2(aq) =>
3 K2CO3(s) + 2 Cr(C2H3O2)3(s) = Cr2(CO3)3(s) + 6 KC2H3O2(aq)
Fe(OH)3 + H2O2 = FeO3 + H2O =>
2 Fe(OH)3 + 3 H2O2 = 2 FeO3 + 6 H2O
HCl + NiCO3 = NiCl2 + H2O + CO2 =>
2 HCl + NiCO3 = NiCl2 + H2O + CO2
H2 + Br2 = HBr = H2 + BR2 = =>
H2 + Br2 = 2 HBr
NaPO4 + KCrO4 = NaCrO4 + KPO4 =>
NaPO4 + KCrO4 = NaCrO4 + KPO4
CuSO4 + NH3 = CuH2 + N2SO4 + H2 =>
CuSO4 + 2 NH3 = CuH2 + N2SO4 + 2 H2
Tl + HCl = H2 + TlCl3 =>
2 Tl + 6 HCl = 3 H2 + 2 TlCl3
Pb + CH3COOH + H2O2 = Pb(CH3COO)2 + H2O =>
Pb + 2 CH3COOH + H2O2 = Pb(CH3COO)2 + 2 H2O
BaCl2 + MgSO4 = BaSO4 + Cl2Mg =>
BaCl2 + MgSO4 = BaSO4 + Cl2Mg
Mg(s) + Fe(NO3)2(aq) = Fe() + Mg(NO3)2 =>
Mg(s) + Fe(NO3)2(aq) = Fe() + Mg(NO3)2
Al + NiSO4 = Al2(SO4)3 + Ni =>
2 Al + 3 NiSO4 = Al2(SO4)3 + 3 Ni
Na(HCO3) + H3BO3 = Na3BO3 + CO2 + H2O =>
3 Na(HCO3) + H3BO3 = Na3BO3 + 3 CO2 + 3 H2O
K2CO3(s) + Cr(C2H3O2)3(s) = Cr2(CO3)3(s) + KC2H3O2(aq) =>
3 K2CO3(s) + 2 Cr(C2H3O2)3(s) = Cr2(CO3)3(s) + 6 KC2H3O2(aq)
Al(s) + ZnCl2(l) = AlCl3(s) + Zn(s) =>
2 Al(s) + 3 ZnCl2(l) = 2 AlCl3(s) + 3 Zn(s)
Pb + H2O2 + CH3COOH = Pb(C2H3O2)2 + H2O =>
Pb + H2O2 + 2 CH3COOH = Pb(C2H3O2)2 + 2 H2O
Sn(NO2)4 + Pt3N4 = Sn3N4 + Pt(NO2)4 =>
3 Sn(NO2)4 + Pt3N4 = Sn3N4 + 3 Pt(NO2)4
CaSO4 + Fe = Ca + FeSO4 =>
CaSO4 + Fe = Ca + FeSO4
H3PO2 + NaOH = Na{+} + PH2O2{-} + H2O =>
H3PO2 + NaOH = Na{+} + PH2O2{-} + H2O
SnCrO4 + Cu = CuCrO4 + Sn =>
SnCrO4 + Cu = CuCrO4 + Sn
NO2HO = HNO3 =>
NO2HO = HNO3
Na3PO4 + KOH = NaOH + K3PO4 =>
Na3PO4 + 3 KOH = 3 NaOH + K3PO4
PbSO4 = PbSO3 + O2 =>
2 PbSO4 = 2 PbSO3 + O2
Ce(SO4)2 + H2SeO3 + H2O = Ce2(SO4)3 + H2SeO4 + H2SO4 =>
2 Ce(SO4)2 + H2SeO3 + H2O = Ce2(SO4)3 + H2SeO4 + H2SO4
HS{-} + NO2{-} + H{+} = S + N2 + H2O =>
3 HS{-} + 2 NO2{-} + 5 H{+} = 3 S + N2 + 4 H2O
NH4CO2NH2 = NH3 + CO2 =>
NH4CO2NH2 = 2 NH3 + CO2
NaBr(s) + Cl2(s) = NaCl(s) + Br2(s) =>
2 NaBr(s) + Cl2(s) = 2 NaCl(s) + Br2(s)
KMnO4 + C2H5OH + NaOH = C2H4O2 + H2O + K2OH + MnNaO4 =>
8 KMnO4 + C2H5OH + 8 NaOH = C2H4O2 + 3 H2O + 4 K2OH + 8 MnNaO4
Na2SO4(aq) + Ba(NO3)2(aq) = Ba(SO4)(s) + NaNO3(aq) =>
Na2SO4(aq) + Ba(NO3)2(aq) = Ba(SO4)(s) + 2 NaNO3(aq)
NaCl(s) + H2SO4(aq) = HCl(g) + NaHSO4(s) =>
NaCl(s) + H2SO4(aq) = HCl(g) + NaHSO4(s)
HCl + CaCO3 = CaCl2 + H2O + CO2 =>
2 HCl + CaCO3 = CaCl2 + H2O + CO2
Na2O + H2O = NaOH =>
Na2O + H2O = 2 NaOH
S(s) + O(g)2 = SO2 =>
S(s) + O(g)2 = SO2
NaHCO3(s)(heat) = Na2O(s) + CO2(g) + H2O(g) =>
2 NaHCO3(s)(heat) = Na2O(s) + 2 CO2(g) + H2O(g)
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