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4 Fe + 3 O2 = 2 Fe2O3
F4S + H2O = SO2 + FH =>
F4S + 2 H2O = SO2 + 4 FH
Na2O + SO2 = Na2SO3 =>
Na2O + SO2 = Na2SO3
P(s) + Cl2(g) = PCl5 =>
2 P(s) + 5 Cl2(g) = 2 PCl5
P2O5 + Li(OH) = Li3PO4 + H2O =>
P2O5 + 6 Li(OH) = 2 Li3PO4 + 3 H2O
CaC2 + H2O = C2H2 + Ca(OH)2 =>
CaC2 + 2 H2O = C2H2 + Ca(OH)2
Al(s) + H2SO4(aq) = Al(SO4)3(aq) + H2(q) =>
Al(s) + 3 H2SO4(aq) = Al(SO4)3(aq) + 3 H2(q)
Ga2O3 + SOCl2 = GaCl3 + SO2 =>
Ga2O3 + 3 SOCl2 = 2 GaCl3 + 3 SO2
C12H22O11 = C + H2O =>
C12H22O11 = 12 C + 11 H2O
CrO4{2-} + S{2-} + H2O = S + CrO2{-} + OH{-} =>
2 CrO4{2-} + 3 S{2-} + 4 H2O = 3 S + 2 CrO2{-} + 8 OH{-}
S8 + O2 = SO3 =>
S8 + 12 O2 = 8 SO3
C3H6O + H2CrO4 + H2SO = C3H6O2 + Cr4(SO)3 + H2O =>
9 C3H6O + 4 H2CrO4 + 3 H2SO = 9 C3H6O2 + Cr4(SO)3 + 7 H2O
HCl(aq) = H2(g) + Cl2(g) =>
2 HCl(aq) = H2(g) + Cl2(g)
Ca2 + CO2 + H2O = Ca(HCO3)2 + H2 =>
Ca2 + 4 CO2 + 4 H2O = 2 Ca(HCO3)2 + 2 H2
Na2SO3 + KMnO4 + H2O = Na2SO4 + Mn2O3 + KOH =>
4 Na2SO3 + 2 KMnO4 + H2O = 4 Na2SO4 + Mn2O3 + 2 KOH
C3H8 + O2 = CO2 + H2O =>
C3H8 + 5 O2 = 3 CO2 + 4 H2O
BaCI3 + H2SO4 = H2Ba + CI3SO4 =>
BaCI3 + H2SO4 = H2Ba + CI3SO4
NH4Fe(SO4)212H2O + NH3 = NH3Fe(SO4)212H2O + NH4 =>
NH4Fe(SO4)212H2O + NH3 = NH3Fe(SO4)212H2O + NH4
CH2ClCOOH + O2 = CO2 + H2O + HCl =>
2 CH2ClCOOH + 3 O2 = 4 CO2 + 2 H2O + 2 HCl
Hg2CrO4 = Cr2O3 + Hg + O2 =>
4 Hg2CrO4 = 2 Cr2O3 + 8 Hg + 5 O2
H3OCl + NaOH = NaCl + H2O =>
H3OCl + NaOH = NaCl + 2 H2O
HNO3 + Mg(HCO3)2 = Mg(NO3)2 + H(HCO3) =>
2 HNO3 + Mg(HCO3)2 = Mg(NO3)2 + 2 H(HCO3)
KClO3 + H2SO4 + CH3CH2OH = Cl2 + CH3COOH + H2O + KHSO3 =>
4 KClO3 + 4 H2SO4 + 7 CH3CH2OH = 2 Cl2 + 7 CH3COOH + 9 H2O + 4 KHSO3
Na2B4O7 + H2O + BaCl2 = Ba(BO2)2 + NaCl + H3BO3 =>
Na2B4O7 + 3 H2O + BaCl2 = Ba(BO2)2 + 2 NaCl + 2 H3BO3
AlHg + O2 = Al2O3 + Hg =>
4 AlHg + 3 O2 = 2 Al2O3 + 4 Hg
KClO3 = KCl + O2 =>
2 KClO3 = 2 KCl + 3 O2
Si(s) + NaOH(aq) = Na4SiO4(s) + H2 =>
Si(s) + 4 NaOH(aq) = Na4SiO4(s) + 2 H2
Pb(NO3)2(aq) + HCl(aq) = PbCl2(s) + HNO3 =>
Pb(NO3)2(aq) + 2 HCl(aq) = PbCl2(s) + 2 HNO3
C6H5COOH + CH3CH(OH)CH2CH3 = C6H5COOCH2CH2CH3 + H2O =>
4 C6H5COOH + 3 CH3CH(OH)CH2CH3 = 4 C6H5COOCH2CH2CH3 + 3 H2O
PhH5CH3 + KMnO4 + H2SO4 = PhH5COOH + H2O + K2SO4 + MnSO4 =>
5 PhH5CH3 + 6 KMnO4 + 9 H2SO4 = 5 PhH5COOH + 14 H2O + 3 K2SO4 + 6 MnSO4
H2SO3 + H{+} + e = S2O3{-2} + H2O =>
2 H2SO3 + 2 H{+} + 4e = S2O3{-2} + 3 H2O
CuO + H2O = CuOOH + H2 =>
2 CuO + 2 H2O = 2 CuOOH + H2
NaOH{-} + FeCl3{-} = NaCl3{-} + FeOH{-} =>
NaOH{-} + FeCl3{-} = NaCl3{-} + FeOH{-}
Al + H3PO4 = AlPO4 + H2 =>
2 Al + 2 H3PO4 = 2 AlPO4 + 3 H2
Cr(OH3) + KOH + Br2 = K2CrO4 + KBr + H2O =>
2 Cr(OH3) + 18 KOH + 7 Br2 = 2 K2CrO4 + 14 KBr + 12 H2O
HNO3 + MnOH2 = HOH2 + MnNO3 =>
HNO3 + MnOH2 = HOH2 + MnNO3
NaCl2KOH = NaOHKCl2 =>
NaCl2KOH = NaOHKCl2
C3H4O2 = C2H4O + CO =>
C3H4O2 = C2H4O + CO
FeBr3 + KI = I2 + FeBr2 + KBr =>
2 FeBr3 + 2 KI = I2 + 2 FeBr2 + 2 KBr
C4H10 + O2 = CO2 + H2O =>
2 C4H10 + 13 O2 = 8 CO2 + 10 H2O
KNO3 + C2H2O4 = N2 + K2CO3 + H2O + CO2 =>
2 KNO3 + 5 C2H2O4 = N2 + K2CO3 + 5 H2O + 9 CO2
Ni + N2 = NiN =>
2 Ni + N2 = 2 NiN
HKC8H4O4 + NaOH = NaKC8H4O4 + H2O =>
HKC8H4O4 + NaOH = NaKC8H4O4 + H2O
KBr + Fe2(SO4)3 = Br2 + K2SO4 + FeSO4 =>
2 KBr + Fe2(SO4)3 = Br2 + K2SO4 + 2 FeSO4
Ge + S = GeS2 =>
Ge + 2 S = GeS2
NH4OH(aq) + MgCl2(aq) = NH4Cl(aq) + Mg(OH)2 =>
2 NH4OH(aq) + MgCl2(aq) = 2 NH4Cl(aq) + Mg(OH)2
H3PO4 + MoO3 = H3PMo12O40 =>
H3PO4 + 12 MoO3 = H3PMo12O40
I2 + H2O + Na3AsO3 = H2AsO4 + NaI =>
3 I2 + 2 H2O + 2 Na3AsO3 = 2 H2AsO4 + 6 NaI
K2Cr2O7 + H2SO4 + H2S = Cr2(SO4)3 + KHSO3 + H2O =>
4 K2Cr2O7 + 15 H2SO4 + 5 H2S = 4 Cr2(SO4)3 + 8 KHSO3 + 16 H2O
H2O + NO2 = NH3 + O2 =>
6 H2O + 4 NO2 = 4 NH3 + 7 O2
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