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2 K2Cr2O7 = 4 K + 4 Cr + 7 O2
PO4 + HClO = ClO + H3PO4 =>
PO4 + 3 HClO = 3 ClO + H3PO4
H2SO4 + NH3 = HNO3 + SO2 + H2O =>
4 H2SO4 + NH3 = HNO3 + 4 SO2 + 5 H2O
(NH4)2CO3 + Ca2S2 = CaCO3 + NH4 + S =>
2(NH4)2CO3 + Ca2S2 = 2 CaCO3 + 4 NH4 + 2 S
CuO = Cu + O2 =>
2 CuO = 2 Cu + O2
HClO4 + BaS = H2S + Ba(ClO4)2 =>
2 HClO4 + BaS = H2S + Ba(ClO4)2
[Ni(NH3)6](OH)2 + KBr = [Ni(NH3)6]Br2 + KOH =>
[Ni(NH3)6](OH)2 + 2 KBr = [Ni(NH3)6]Br2 + 2 KOH
CH3COOH + Fe2O3 = FeCH3COO + H2O + CO2 =>
5 CH3COOH + 2 Fe2O3 = 4 FeCH3COO + 4 H2O + 2 CO2
Mg(OH)2 + (NH4)2SO4 = MgSO4 + NH3 + H2O =>
Mg(OH)2 + (NH4)2SO4 = MgSO4 + 2 NH3 + 2 H2O
CuIO3 + KSO4 = CuSO4 + KIO3 =>
CuIO3 + KSO4 = CuSO4 + KIO3
NaCl + Mg(OH)2 = Na(OH) + MgCl2 =>
2 NaCl + Mg(OH)2 = 2 Na(OH) + MgCl2
Pb3 + N2 = Pb3N4 =>
Pb3 + 2 N2 = Pb3N4
Bi{3+} + Sn(OH)4{2-} + OH{-} = Sn(OH)6{2-} + Bi =>
2 Bi{3+} + 3 Sn(OH)4{2-} + 6 OH{-} = 3 Sn(OH)6{2-} + 2 Bi
Fe(NO3)3 + K2SO4 = Fe(SO4)3 + K2NO3 =>
Fe(NO3)3 + 3 K2SO4 = Fe(SO4)3 + 3 K2NO3
Co(OH)3 + NH3 = [Co(NH3)6](OH)3 =>
Co(OH)3 + 6 NH3 = [Co(NH3)6](OH)3
KMnO4 + FeS + H2S04 = K2SO4 + MnS + Fe2(SO4)3 + H2O =>
98 KMnO4 + 26 FeS + 40 H2S04 = 49 K2SO4 + 98 MnS + 13 Fe2(SO4)3 + 40 H2O
CaCO3 + HCl = Ca + Cl + H2O + CO2 =>
CaCO3 + 2 HCl = Ca + 2 Cl + H2O + CO2
OH + Co = Co(OH)2 =>
2 OH + Co = Co(OH)2
Na3[Cr(OH)6] + Br2 + NaOH = Na2CrO7 + NaBr + H2O =>
2 Na3[Cr(OH)6] + 9 Br2 + 16 NaOH = 2 Na2CrO7 + 18 NaBr + 14 H2O
Rb2S + HI = RbI + H2S =>
Rb2S + 2 HI = 2 RbI + H2S
Ni2O3 + C = NiO + CO =>
Ni2O3 + C = 2 NiO + CO
MnSO4 + K2CO3 = K2SO4 + MnCO3 =>
MnSO4 + K2CO3 = K2SO4 + MnCO3
CuS + Pb = PbS + Cu =>
CuS + Pb = PbS + Cu
Cu(k) + HNO3(s) = Cu(NO3)2 + H2O + NO2 =>
Cu(k) + 4 HNO3(s) = Cu(NO3)2 + 2 H2O + 2 NO2
KMnO4 + Na2S2O3 + H2O = MnO2 + Na2SO4 + KOH + K2SO4 =>
8 KMnO4 + 3 Na2S2O3 + H2O = 8 MnO2 + 3 Na2SO4 + 2 KOH + 3 K2SO4
C2H2O4 + O2 = CO2 + H2O =>
2 C2H2O4 + O2 = 4 CO2 + 2 H2O
Zn + CuCl2 = ZnCl4 + Cu =>
Zn + 2 CuCl2 = ZnCl4 + 2 Cu
Mg(No3)2 + Ca(OH)2 = Mg(OH)2 + Ca(No3)2 =>
Mg(No3)2 + Ca(OH)2 = Mg(OH)2 + Ca(No3)2
Br2 + HNO2 = BrNO2 + H2 =>
Br2 + 2 HNO2 = 2 BrNO2 + H2
CuS + Pb = PbS + Cu =>
CuS + Pb = PbS + Cu
Pb(CN)4 + Sr = PbSr + (CN)4 =>
Pb(CN)4 + Sr = PbSr + (CN)4
Hg2(NO3)2 + Na2S = Hg + HgS + Na2(NO3)2 =>
Hg2(NO3)2 + Na2S = Hg + HgS + Na2(NO3)2
H2CO2 + OH = H2O + HCO2 =>
H2CO2 + OH = H2O + HCO2
CCl = C + Cl2 =>
2 CCl = 2 C + Cl2
CuS + Pb = PbS + Cu =>
CuS + Pb = PbS + Cu
KOH + C8H5O4K = K2C8H4O4 + H2O =>
KOH + C8H5O4K = K2C8H4O4 + H2O
Cr(OH)3(aq) + H2SO4(aq) = Cr2(SO4)3(aq) + H2O =>
2 Cr(OH)3(aq) + 3 H2SO4(aq) = Cr2(SO4)3(aq) + 6 H2O
P4O10 + Li2SO4 = Li3PO4 + SO3 =>
P4O10 + 6 Li2SO4 = 4 Li3PO4 + 6 SO3
Na2SO3 + Ce2 + H2O = Na2SO4 + HCe =>
Na2SO3 + Ce2 + H2O = Na2SO4 + 2 HCe
CO2 + H2O = C2H5OH + O2 =>
2 CO2 + 3 H2O = C2H5OH + 3 O2
Ra(SCN)2 + BFe(CN)6 = Ra3[Fe(CN)6]2 + B(SCN)3 =>
3 Ra(SCN)2 + 2 BFe(CN)6 = Ra3[Fe(CN)6]2 + 2 B(SCN)3
CH3Cl(g) + Cl2(g) = CCl4(g) + HCl(g) =>
CH3Cl(g) + 3 Cl2(g) = CCl4(g) + 3 HCl(g)
Mn + NiSO4 = Ni + MnSO4 =>
Mn + NiSO4 = Ni + MnSO4
Zn + H2TeO4 = ZnTeO4 + H2 =>
Zn + H2TeO4 = ZnTeO4 + H2
IrCl3 + NaOH = Ir2O3 + NaCl + HCl =>
2 IrCl3 + 3 NaOH = Ir2O3 + 3 NaCl + 3 HCl
IO3{-} + I{-} + H{+} = I2 + H2O =>
IO3{-} + 5 I{-} + 6 H{+} = 3 I2 + 3 H2O
PhCH3 + KMnO4 + H2SO4 = PhCOOH + K2SO4 + MnSO4 + H2O =>
5 PhCH3 + 6 KMnO4 + 9 H2SO4 = 5 PhCOOH + 3 K2SO4 + 6 MnSO4 + 14 H2O
KI + H2O = H2K + OI =>
KI + H2O = H2K + OI
CH3CH2COOH + C2H5NH2 = C5H8ONH3 + H2O =>
CH3CH2COOH + C2H5NH2 = C5H8ONH3 + H2O
PbO + ClO2 + NaOH = PbO2 + NaClO2 + H2O =>
PbO + 2 ClO2 + 2 NaOH = PbO2 + 2 NaClO2 + H2O
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