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2 H2 + O2 = 2 H2O
P + O2 = P2O5 =>
4 P + 5 O2 = 2 P2O5
CO2 + H2O + e = C4H4O6{2-} + OH{-} =>
4 CO2 + 6 H2O + 10e = C4H4O6{2-} + 8 OH{-}
CoCl2 + KNO2 + H2SO4 = K3[Co(NO2)6] + K2SO4 + HCl + NO + H2O =>
CoCl2 + 7 KNO2 + 2 H2SO4 = K3[Co(NO2)6] + 2 K2SO4 + 2 HCl + NO + H2O
Li2SO3 = Li + SO3 =>
Li2SO3 = 2 Li + SO3
H2S + Na2[Be(OH)4] = NaHS + BeS + H2O =>
3 H2S + Na2[Be(OH)4] = 2 NaHS + BeS + 4 H2O
silver + chlorine = silverchloride =>
2 Ag + Cl2 = 2 AgCl
Br2 + H3PO4 = P2 + HBrO3 + H2O =>
Br2 + 2 H3PO4 = P2 + 2 HBrO3 + 2 H2O
Cu + HNO3(concentrate) = Cu(NO3)2 + NO2 + H2O =>
Cu + 4 HNO3(concentrate) = Cu(NO3)2 + 2 NO2 + 2 H2O
H2P2O7 + Mg(OH)2 = MgP2O7 + H2O =>
H2P2O7 + Mg(OH)2 = MgP2O7 + 2 H2O
Pb(NO3)2 + NaCl = NaNO3 + PbCl2 =>
Pb(NO3)2 + 2 NaCl = 2 NaNO3 + PbCl2
Mg + O2 = MgO =>
2 Mg + O2 = 2 MgO
P4O10(s) + H2O(l) = H3PO4(l) =>
P4O10(s) + 6 H2O(l) = 4 H3PO4(l)
CoCl2 + KNO2 + H2SO4 = K3[Co(NO2)6] + K2SO4 + HCl + NO + H2O =>
CoCl2 + 7 KNO2 + 2 H2SO4 = K3[Co(NO2)6] + 2 K2SO4 + 2 HCl + NO + H2O
HCOOH + H2 = HCHO + H2O =>
HCOOH + H2 = HCHO + H2O
Al2O3 + CaCl2 = AlCl3 + CaO =>
Al2O3 + 3 CaCl2 = 2 AlCl3 + 3 CaO
Al(OH)3 + HBr = AlBr3 + H2O =>
Al(OH)3 + 3 HBr = AlBr3 + 3 H2O
Na2SO4 + H2O = NaOH + H2SO4 =>
Na2SO4 + 2 H2O = 2 NaOH + H2SO4
Fe2(SO4)3 + HNO3 = Fe(NO3)3 + H2(SO4)3 + NO + H2O =>
3 Fe2(SO4)3 + 22 HNO3 = 6 Fe(NO3)3 + 3 H2(SO4)3 + 4 NO + 8 H2O
Cl2 + Ca(OH)2 = Ca(ClO3)2 + CaCl2 + H22O =>
22 Cl2 + 22 Ca(OH)2 = 7 Ca(ClO3)2 + 15 CaCl2 + 2 H22O
Al(s) + H2SO4(aq) = H2(g) + Al2(SO4)3(aq) =>
2 Al(s) + 3 H2SO4(aq) = 3 H2(g) + Al2(SO4)3(aq)
NaHCO3 + H{+} = Na{+} + H2CO3 =>
NaHCO3 + H{+} = Na{+} + H2CO3
Fe + CaCO3 = Fe2(CO3)3 + Ca =>
2 Fe + 3 CaCO3 = Fe2(CO3)3 + 3 Ca
In2O3 + Fe = In + Fe2O3 =>
In2O3 + 2 Fe = 2 In + Fe2O3
NaClO + KI = KCl + NaI + O =>
NaClO + KI = KCl + NaI + O
NH3 + I2 = N2I6 + H2 =>
2 NH3 + 3 I2 = N2I6 + 3 H2
BaCl2 + HNo3 = Ba(No3)2 + HCl =>
BaCl2 + 2 HNo3 = Ba(No3)2 + 2 HCl
H2O2 = H2O + O2 =>
2 H2O2 = 2 H2O + O2
CH3COOH + Al2(CO3)3 = Al2CHCOO3 + H2O + CO2 =>
7 CH3COOH + 8 Al2(CO3)3 = 8 Al2CHCOO3 + 10 H2O + 22 CO2
P4 + Br2 + H2O = H3PO4 + HBr =>
P4 + 10 Br2 + 16 H2O = 4 H3PO4 + 20 HBr
CH3COONa + HCl = C2H3O2 + NaHCl =>
CH3COONa + HCl = C2H3O2 + NaHCl
FeCl3 + H3PO4 = H3[Fe(PO4)2] + HCl =>
FeCl3 + 2 H3PO4 = H3[Fe(PO4)2] + 3 HCl
HCl + Na2CO3 = CO2(g) + NaCl + H2O(l) =>
2 HCl + Na2CO3 = CO2(g) + 2 NaCl + H2O(l)
(NH4)2S + O2 = NH3 + H2O + S =>
2(NH4)2S + O2 = 4 NH3 + 2 H2O + 2 S
MnSO4 + Sr(NO3)2 = Mn(NO3)2 + SrSO4 =>
MnSO4 + Sr(NO3)2 = Mn(NO3)2 + SrSO4
Mn(NO3)4 = Mn2O3 + NO2 + O2 =>
4 Mn(NO3)4 = 2 Mn2O3 + 16 NO2 + 5 O2
WO3 + SnCl2 + HCl = W3O4 + H2SnCl6 + H2O =>
3 WO3 + 5 SnCl2 + 20 HCl = W3O4 + 5 H2SnCl6 + 5 H2O
MnCl2 + H2SO4 = MnSO4 + H + Cl =>
MnCl2 + H2SO4 = MnSO4 + 2 H + 2 Cl
HCl + Ca(OH)2 = CaCl2 + H2O =>
2 HCl + Ca(OH)2 = CaCl2 + 2 H2O
Au2S3 + H2 = H2S + Au =>
Au2S3 + 3 H2 = 3 H2S + 2 Au
FeS2 + O2 = Fe2O3 + SO2 =>
4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
CrCl2 + H2SO4 = CrSO4 + Cl2H2 =>
CrCl2 + H2SO4 = CrSO4 + Cl2H2
Mg + S = MgS =>
Mg + S = MgS
Mg(oh)2 + KOH = Mg(OH)2 + K =>
Mg(oh)2 + 4 KOH = 2 Mg(OH)2 + 4 K
Na2CO3(aq) + HCl(aq) = NaCl(s) + CO2(g) + H2O(g) =>
Na2CO3(aq) + 2 HCl(aq) = 2 NaCl(s) + CO2(g) + H2O(g)
CH3CCH + KMnO4 + H2SO4 = CH3COOH + K2SO4 + MnSO4 + H2O =>
10 CH3CCH + 8 KMnO4 + 12 H2SO4 = 15 CH3COOH + 4 K2SO4 + 8 MnSO4 + 2 H2O
KNO3 + CH3COOH = NH3 + CO2 + H2O + K =>
8 KNO3 + 9 CH3COOH = 8 NH3 + 18 CO2 + 6 H2O + 8 K
Au + HClO4 = Au(ClO4)3 + H2 =>
2 Au + 6 HClO4 = 2 Au(ClO4)3 + 3 H2
Sn + KOH + H2O = K2SnO3 + H2 =>
Sn + 2 KOH + H2O = K2SnO3 + 2 H2
ClO3{-} + As2S3 + OH{-} = AsO43{-} + SO42{-} + Cl{-} + H2O =>
419 ClO3{-} + 6 As2S3 + 30 OH{-} = 12 AsO43{-} + 18 SO42{-} + 419 Cl{-} + 15 H2O
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