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4 K2Cr2O7 + 3 H2S + 13 H2SO4 = 4 Cr2(SO4)3 + 4 K2SO4 + 16 H2O
P + O2 = P2O5 =>
4 P + 5 O2 = 2 P2O5
Al + HCl = AlCl3 + H2 =>
2 Al + 6 HCl = 2 AlCl3 + 3 H2
C4H10 + O2 = CO2 + H2O =>
2 C4H10 + 13 O2 = 8 CO2 + 10 H2O
Zinc + hydrochloricacid = zincchloride + hydrogen =>
Zn + 2 HCl = ZnCl2 + H2
Fe + Cl2 = FeCl3 =>
2 Fe + 3 Cl2 = 2 FeCl3
Mg + H2O = H2 + Mg(OH)2 =>
Mg + 2 H2O = H2 + Mg(OH)2
Sn + HCl = SnCl4 + H =>
Sn + 4 HCl = SnCl4 + 4 H
C2H6 + O2 = CO2 + H20 =>
10 C2H6 + 20 O2 = 20 CO2 + 3 H20
AlCl3 + Na2CO3 = Al2(CO3)3 + NaCl =>
2 AlCl3 + 3 Na2CO3 = Al2(CO3)3 + 6 NaCl
Fe + Cl2 = FeCl3 =>
2 Fe + 3 Cl2 = 2 FeCl3
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
Al(OH)3 + H2SO4 = Al2(SO4)3 + H2O =>
2 Al(OH)3 + 3 H2SO4 = Al2(SO4)3 + 6 H2O
Ca + HSO4 = Ca(HSO4)2 =>
Ca + 2 HSO4 = Ca(HSO4)2
NaOH + Cl2 = NaCl3 + NaClO + H2O =>
2 NaOH + 2 Cl2 = NaCl3 + NaClO + H2O
KNO3 = KNO2 + O2 =>
2 KNO3 = 2 KNO2 + O2
Fe2O3 + H2 = H2O + Fe =>
Fe2O3 + 3 H2 = 3 H2O + 2 Fe
Ag2O = Ag + O2 =>
2 Ag2O = 4 Ag + O2
SO + O2 = O2S =>
2 SO + O2 = 2 O2S
Na3PO4 + CaCl2 = CaPO4 + Na3Cl2 =>
Na3PO4 + CaCl2 = CaPO4 + Na3Cl2
H2O2 = H20 + O2 =>
10 H2O2 = H20 + 10 O2
SO + O2 = SO2 =>
2 SO + O2 = 2 SO2
H2O2 = H20 + O2 =>
10 H2O2 = H20 + 10 O2
SO + O2 = SO2 =>
2 SO + O2 = 2 SO2
Ca + H2O = Ca(OH)2 + H2 =>
Ca + 2 H2O = Ca(OH)2 + H2
S8 + O2 = SO3 =>
S8 + 12 O2 = 8 SO3
PbO + Al = Al2O3 + Pb =>
3 PbO + 2 Al = Al2O3 + 3 Pb
H2SO4 + HI = I2 + H2S + H2O =>
H2SO4 + 8 HI = 4 I2 + H2S + 4 H2O
HCl + K = KCl + H2 =>
2 HCl + 2 K = 2 KCl + H2
NaOH + Cl2 = NaCl + NaClO + H2O =>
2 NaOH + Cl2 = NaCl + NaClO + H2O
CuSO4 + (NH4)2S = Cu2S + NH4SO4 =>
2 CuSO4 + (NH4)2S = Cu2S + 2 NH4SO4
Cu + HNO3 = Cu(NO3)2 + NO + H2O =>
3 Cu + 8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O
Cr2O3 + Mg = MgO + Cr =>
Cr2O3 + 3 Mg = 3 MgO + 2 Cr
Na2Cr2O7 + FeCl2 + HCl = CrCl3 + FeCl3 + NaCl + H2O =>
Na2Cr2O7 + 6 FeCl2 + 14 HCl = 2 CrCl3 + 6 FeCl3 + 2 NaCl + 7 H2O
AL(OH)3 + HCl = ALCl3 + H2O =>
AL(OH)3 + 3 HCl = ALCl3 + 3 H2O
H2SO3 + (NH4)2CO3 = (NH4)2SO3 + H2O + CO2 =>
H2SO3 + (NH4)2CO3 = (NH4)2SO3 + H2O + CO2
H2O2 = H20 + O2 =>
10 H2O2 = H20 + 10 O2
CaCO3 + SO2 + O2 = CaSO4 + CO2 =>
2 CaCO3 + 2 SO2 + O2 = 2 CaSO4 + 2 CO2
Al + H2O = Al(OH)3 + H2 =>
2 Al + 6 H2O = 2 Al(OH)3 + 3 H2
NH4VO3 + NaOH = Na3VO4 + NH3 + H2O =>
NH4VO3 + 3 NaOH = Na3VO4 + NH3 + 2 H2O
O2 + CS2 = CO2 + SO2 =>
3 O2 + CS2 = CO2 + 2 SO2
Ca + HNO3 = Ca(NO3)2 + N3 + H2O =>
15 Ca + 36 HNO3 = 15 Ca(NO3)2 + 2 N3 + 18 H2O
Sn(OH)2 + NaOH = Na2SnO2 + H2O =>
Sn(OH)2 + 2 NaOH = Na2SnO2 + 2 H2O
Na2O2 + H2O = NaOH + O2 =>
2 Na2O2 + 2 H2O = 4 NaOH + O2
KCLO3 = KCL + O2 =>
2 KCLO3 = 2 KCL + 3 O2
Calciumcarbonate + hydrochloricacid = calciumchloride + water + carbondioxide =>
CaCO3 + 2 HCl = CaCl2 + H2O + CO2
AlCl2 + NaOH = Al(OH)2 + NaCl =>
AlCl2 + 2 NaOH = Al(OH)2 + 2 NaCl
KI + Cl2 = KCl2 + I2 =>
2 KI + 2 Cl2 = 2 KCl2 + I2
V{5+} + Zn = Zn{2+} + V{3+} =>
V{5+} + Zn = Zn{2+} + V{3+}
H2O = H2 + O2 =>
2 H2O = 2 H2 + O2
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