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4 Fe + 3 O2 = 2 Fe2O3
Fe(OH)3 = Fe2O3 + H2O =>
2 Fe(OH)3 = Fe2O3 + 3 H2O
PBO + PBS = SO + PB =>
PBO + PBS = SO + 2 PB
NO2 + Mg = N2 + MgO =>
2 NO2 + 4 Mg = N2 + 4 MgO
Pb(NO3)2 + Na2CO3 = PbCO3 + Na2(NO3)2 =>
Pb(NO3)2 + Na2CO3 = PbCO3 + Na2(NO3)2
Pb(NO3)2 + K2CrO4 = PbCrO4 + KNO3 =>
Pb(NO3)2 + K2CrO4 = PbCrO4 + 2 KNO3
Na2S + H2O = NaOH + NaHS =>
Na2S + H2O = NaOH + NaHS
N2O5 + AgOH = AgNO3 + H2O =>
N2O5 + 2 AgOH = 2 AgNO3 + H2O
Ba(OH)2 + NO2 = Ba(NO3)2 + NO + H2O =>
Ba(OH)2 + 3 NO2 = Ba(NO3)2 + NO + H2O
Al + H2SO = H2 + Al(SO)3 =>
Al + 3 H2SO = 3 H2 + Al(SO)3
Ba(OH)2 + NO2 = Ba(NO3)2 + NO + H2O =>
Ba(OH)2 + 3 NO2 = Ba(NO3)2 + NO + H2O
(Co(NH3)6)Cl3 = CoCl2 + NH4Cl + N2 + NH3 =>
6(Co(NH3)6)Cl3 = 6 CoCl2 + 6 NH4Cl + N2 + 28 NH3
Al(NO3)3 + ZnSO4 = Al2(SO4)3 + Zn(NO3)2 =>
2 Al(NO3)3 + 3 ZnSO4 = Al2(SO4)3 + 3 Zn(NO3)2
KBr + Cl2 + CHCl3 = KCl + CCl4 + HBr =>
KBr + Cl2 + CHCl3 = KCl + CCl4 + HBr
COCl2 + NaOH = CO(OH) + NaCl2 =>
COCl2 + NaOH = CO(OH) + NaCl2
BaO + ZnCl2 = BaCl2 + ZnO =>
BaO + ZnCl2 = BaCl2 + ZnO
Fe(OH)2 + KMnO4 + H2SO4 + H2O = MnSO4 + Fe(OH)3 + K2SO4 =>
10 Fe(OH)2 + 2 KMnO4 + 3 H2SO4 + 2 H2O = 2 MnSO4 + 10 Fe(OH)3 + K2SO4
NaI + K2CrO7 + HCl = I2 + Cr2Cl3 + KCl + NaCl + H2O =>
42 NaI + 4 K2CrO7 + 56 HCl = 21 I2 + 2 Cr2Cl3 + 8 KCl + 42 NaCl + 28 H2O
CU + I = CUI =>
CU + I = CUI
Zn + Cu(OH)2 = Zn(OH)2 + Cu =>
Zn + Cu(OH)2 = Zn(OH)2 + Cu
NH4Cl + KOH = KCl + H2O + NH3 =>
NH4Cl + KOH = KCl + H2O + NH3
Na + O2 = Na2O =>
4 Na + O2 = 2 Na2O
Cu + ZnCl2 = CuCl2 + Zn =>
Cu + ZnCl2 = CuCl2 + Zn
Cu + ZnCl2 = CuCl + Zn =>
2 Cu + ZnCl2 = 2 CuCl + Zn
Ca(NO3)2 + Fe = Ca + Fe(NO3)2 =>
Ca(NO3)2 + Fe = Ca + Fe(NO3)2
FeSO4 + (NH4)2SO4 = (NH4)2Fe(SO4)2 =>
FeSO4 + (NH4)2SO4 = (NH4)2Fe(SO4)2
C2H2(g) + C2H4O2(aq) = C4H6O2 =>
C2H2(g) + C2H4O2(aq) = C4H6O2
H2SO4 + NaOH = H2O + Na2SO4 =>
H2SO4 + 2 NaOH = 2 H2O + Na2SO4
COCl2 + NaOH = CO(OH) + NaCl2 =>
COCl2 + NaOH = CO(OH) + NaCl2
Fe + Cl2 = FeCl3 =>
2 Fe + 3 Cl2 = 2 FeCl3
SiO2 + HF = [Si(OH)2]F2 =>
SiO2 + 2 HF = [Si(OH)2]F2
Zn2 + N = Zn3N =>
3 Zn2 + 2 N = 2 Zn3N
K2Cr2O7 + HBr = KBr + CrBr3 + H2O + Br2 =>
K2Cr2O7 + 14 HBr = 2 KBr + 2 CrBr3 + 7 H2O + 3 Br2
Na2S + H2O = NaOH + NaHS =>
Na2S + H2O = NaOH + NaHS
C02 + H2O = O2 + C6H12O2 =>
3 C02 + 6 H2O = 2 O2 + C6H12O2
O + N = NO =>
O + N = NO
Mn(NO3)2 + (NH4)2S2O8 + HNO3 = HMnO4 + (NH4)2SO4 + NO2 =>
12 Mn(NO3)2 + (NH4)2S2O8 + 20 HNO3 = 12 HMnO4 + 2(NH4)2SO4 + 42 NO2
H2O2 + Br2 = HBr + O2 =>
H2O2 + Br2 = 2 HBr + O2
N2O3(g) + H2O(l) = HNO2(aq) =>
N2O3(g) + H2O(l) = 2 HNO2(aq)
Ca(OH)2 + SiO3 = CaSiO3 + OH =>
Ca(OH)2 + SiO3 = CaSiO3 + 2 OH
ZnOHBr + HBr = ZnBr2 + H2O =>
ZnOHBr + HBr = ZnBr2 + H2O
(CdOH)2SO4 + NH4OH + (NH4)2SO4 = [Cd(NH3)4]SO4 + H2O =>
(CdOH)2SO4 + 6 NH4OH + (NH4)2SO4 = 2[Cd(NH3)4]SO4 + 8 H2O
HAuCl4 + Na3C6H5O7 = Au + NaCl + HCl + CO2 + C5H5O5 =>
HAuCl4 + Na3C6H5O7 = Au + 3 NaCl + HCl + CO2 + C5H5O5
Na3Po4 + BaCl2 = Ba3(Po4)2 + NaCl =>
2 Na3Po4 + 3 BaCl2 = Ba3(Po4)2 + 6 NaCl
CH3CHCNOH + H2O = CH3CHOHCOOH + NH3 =>
CH3CHCNOH + 2 H2O = CH3CHOHCOOH + NH3
COCl2 + NaOH = CO(OH) + NaCl2 =>
COCl2 + NaOH = CO(OH) + NaCl2
C6H12O8 + O2 = CO2 + H2O =>
C6H12O8 + 5 O2 = 6 CO2 + 6 H2O
K2Cr2O7 + NaNO2 + NaOH = Na2CrO4 + KNO2 + H2O =>
K2Cr2O7 + 2 NaNO2 + 2 NaOH = 2 Na2CrO4 + 2 KNO2 + H2O
(NH4)2SO3 + H2SO4 = NH4HSO4 + SO2 + H2O =>
(NH4)2SO3 + 2 H2SO4 = 2 NH4HSO4 + SO2 + H2O
K2S + HCl = KCl + H2S =>
K2S + 2 HCl = 2 KCl + H2S
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