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2 Fe2O3 = 4 Fe + 3 O2
Fe2O3 + CO + H2O = CO2 + Fe(OH)2 =>
Fe2O3 + CO + 2 H2O = CO2 + 2 Fe(OH)2
Na + H2SO4 = Na2SO4 + H2 =>
2 Na + H2SO4 = Na2SO4 + H2
As + NaOH = Na3AsO3 + H2 =>
2 As + 6 NaOH = 2 Na3AsO3 + 3 H2
NaCO + HCl = HCO + NaCl =>
NaCO + HCl = HCO + NaCl
[Cu(NH3)2]Cl + O2 = CuO + NH3 + Cl2 =>
2[Cu(NH3)2]Cl + O2 = 2 CuO + 4 NH3 + Cl2
K3PO4(aq) + AgNO3(aq) = KNO3(aq) + Ag3PO4(s) =>
K3PO4(aq) + 3 AgNO3(aq) = 3 KNO3(aq) + Ag3PO4(s)
HCN + H2O2 = CO2 + NH3 =>
HCN + H2O2 = CO2 + NH3
H2SO4 + CrOH = H2OH + CrSO4 =>
H2SO4 + CrOH = H2OH + CrSO4
Al(s) + NaOH(aq) + H2O = Na(Al(OH)4)(aq) + H2(g) =>
2 Al(s) + 2 NaOH(aq) + 6 H2O = 2 Na(Al(OH)4)(aq) + 3 H2(g)
KMnO4(aq) + PH3(aq) + H2SO4(aq) = MnSO4(aq) + K2SO4(aq) + H3PO4(g) + H2O =>
8 KMnO4(aq) + 5 PH3(aq) + 12 H2SO4(aq) = 8 MnSO4(aq) + 4 K2SO4(aq) + 5 H3PO4(g) + 12 H2O
Cu{+1) = Cu{+2}+Cu =>
2 Cu{+1) = Cu{+2}+Cu
NaOH(aq) + K2SO4(aq) = Na2SO4(aq) + KOH(aq) =>
2 NaOH(aq) + K2SO4(aq) = Na2SO4(aq) + 2 KOH(aq)
CH3COOC3H7 + Cu(OH)2 = Cu2O + CO2 + H2O =>
CH3COOC3H7 + 26 Cu(OH)2 = 13 Cu2O + 5 CO2 + 31 H2O
Al(NO3)3 + Na2SO4 = Al2(SO4)3 + NaNO3 =>
2 Al(NO3)3 + 3 Na2SO4 = Al2(SO4)3 + 6 NaNO3
NaClO + Na2SO3 = Na2SO4 + NaCl =>
NaClO + Na2SO3 = Na2SO4 + NaCl
Ca(OH)2 + H2SO4 = CaSO4 + H2O =>
Ca(OH)2 + H2SO4 = CaSO4 + 2 H2O
FeS2 + O2 = Fe2O3 + SO2 =>
4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
FeCl3 + HI = FeCl2 + HCl + I2 =>
2 FeCl3 + 2 HI = 2 FeCl2 + 2 HCl + I2
Cr2O3 + KOH = K2O + Cr(OH)3 =>
Cr2O3 + 6 KOH = 3 K2O + 2 Cr(OH)3
Zn + CuCl2 = ZnCl2 + Cu =>
Zn + CuCl2 = ZnCl2 + Cu
C3H6 + K2Cr2O7 + H2SO4 = C3H4O4 + Cr2(SO4)3 + K2SO4 + H2O =>
3 C3H6 + 5 K2Cr2O7 + 20 H2SO4 = 3 C3H4O4 + 5 Cr2(SO4)3 + 5 K2SO4 + 23 H2O
Al + PO4 = Al3(PO4)2 =>
3 Al + 2 PO4 = Al3(PO4)2
[Cu(NH3)4](oh)2 + K4Fe(CN)6 = Cu2Fe(CN)6 + K + (NH3)4 =>
[Cu(NH3)4](oh)2 + K4Fe(CN)6 = Cu2Fe(CN)6 + 4 K + 2(NH3)4
K2CrO4 + Na2SO3 + HNO3 = KNO3 + Cr(NO3)3 + Na2SO4 + H2O =>
2 K2CrO4 + 3 Na2SO3 + 10 HNO3 = 4 KNO3 + 2 Cr(NO3)3 + 3 Na2SO4 + 5 H2O
NaClO + Na2SO3 = Na2SO4 + NaCl =>
NaClO + Na2SO3 = Na2SO4 + NaCl
MgI2 + Fe(OH)2 = Mg(OH)2 + FeI2 =>
MgI2 + Fe(OH)2 = Mg(OH)2 + FeI2
SO3 + H2O = H2SO4 =>
SO3 + H2O = H2SO4
C2H4 + Cl2 = C2Cl4 + HCl =>
C2H4 + 4 Cl2 = C2Cl4 + 4 HCl
Cu(OH)2 + OH = Cu(OH)4 =>
Cu(OH)2 + 2 OH = Cu(OH)4
Zn(NO3)2 + KOH = ZnK2 + OHNO3 =>
Zn(NO3)2 + 2 KOH = ZnK2 + 2 OHNO3
NaMnO4 + H2O = HMnO4 + NaOH =>
NaMnO4 + H2O = HMnO4 + NaOH
CaO + C = CaC2 + CO2 =>
2 CaO + 5 C = 2 CaC2 + CO2
C10H13 + O2 = CO2 + H2O =>
4 C10H13 + 53 O2 = 40 CO2 + 26 H2O
Ba(OH)2 + HCl = BaCl2 + H2O =>
Ba(OH)2 + 2 HCl = BaCl2 + 2 H2O
Cu(H2O)6{+2} + Zn = Cu + Zn(H2O)6{+2} =>
Cu(H2O)6{+2} + Zn = Cu + Zn(H2O)6{+2}
Ca + H2O = Ca(OH)2 + H2 =>
Ca + 2 H2O = Ca(OH)2 + H2
CuS + FeCl3 = CuCl2 + FeCl2 + S =>
CuS + 2 FeCl3 = CuCl2 + 2 FeCl2 + S
Cr(ClO3)2 + (NH4)3P = Cr3P2 + NH4ClO3 =>
3 Cr(ClO3)2 + 2(NH4)3P = Cr3P2 + 6 NH4ClO3
Li + H2O = LiOH + H2 =>
2 Li + 2 H2O = 2 LiOH + H2
Zn + HCl + H2SO4 = ZnCl2 + SO2 + H2O =>
Zn + 2 HCl + H2SO4 = ZnCl2 + SO2 + 2 H2O
Na2S + ZnSO4 + H2O = Zn(OH)2 + H2S + Na2SO4 =>
Na2S + ZnSO4 + 2 H2O = Zn(OH)2 + H2S + Na2SO4
NH3 + CoCl2 = Co + NH3Cl2 =>
NH3 + CoCl2 = Co + NH3Cl2
HBr + K2Cr2O7 = KBr + CrBr3 + H2O + Br =>
14 HBr + K2Cr2O7 = 2 KBr + 2 CrBr3 + 7 H2O + 6 Br
CuO + HCl = CuCl2 + H2O = CuO + H2O =>
CuO + 2 HCl = CuCl2 + H2O
HIO3 + AgOH = AgIO3 + H2O =>
HIO3 + AgOH = AgIO3 + H2O
Cr(ClO3)2 + (NH4)3P = Cr3P2 + NH4ClO3 =>
3 Cr(ClO3)2 + 2(NH4)3P = Cr3P2 + 6 NH4ClO3
Li2CO3 + H2CO3 = LiOH + CO2 =>
Li2CO3 + H2CO3 = 2 LiOH + 2 CO2
CaCO3 + HNO3 = Ca(NO3)2 + CO2 + H2O =>
CaCO3 + 2 HNO3 = Ca(NO3)2 + CO2 + H2O
HClO4 + Ba(OH)2 = Ba(ClO4)2 + H2O =>
2 HClO4 + Ba(OH)2 = Ba(ClO4)2 + 2 H2O
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