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2 HBr + C2H2 = C2H4 + Br2
C3 + H6 = C6H6 =>
2 C3 + H6 = C6H6
HgO + KI + H2O = K2[HgI4] + KOH =>
HgO + 4 KI + H2O = K2[HgI4] + 2 KOH
CdS + NO3 = CdS(NO3)2 =>
CdS + 2 NO3 = CdS(NO3)2
AlCl3 + Cu2O = Al2O3 + CuCl =>
2 AlCl3 + 3 Cu2O = Al2O3 + 6 CuCl
MgCl2 + H2SO4 = MgSO4 + HCl =>
MgCl2 + H2SO4 = MgSO4 + 2 HCl
Fe + Cl3H2 = FeCl3 + H2 =>
Fe + Cl3H2 = FeCl3 + H2
CH3COOH + K2Cr2O7O2 = CO2 + Cr + H2O + K =>
9 CH3COOH + 4 K2Cr2O7O2 = 18 CO2 + 8 Cr + 18 H2O + 8 K
(CH2)5(OH)2 + O2(g) = CO2 + H2O =>
(CH2)5(OH)2 + 7 O2(g) = 5 CO2 + 6 H2O
HF + K2S = KF + H2S =>
2 HF + K2S = 2 KF + H2S
(CdOH)2SO4 + H2SO4 = Cd(HSO4)2 + H2O =>
(CdOH)2SO4 + 3 H2SO4 = 2 Cd(HSO4)2 + 2 H2O
CrO4{2-} + HCl = Cr2O7{2-} + H2O + Cl{-} =>
2 CrO4{2-} + 2 HCl = Cr2O7{2-} + H2O + 2 Cl{-}
Al0 + Fe2O3 = Fe0 + Al2O3 =>
2 Al0 + Fe2O3 = 2 Fe0 + Al2O3
C3H7Br + NaOH = C3H8O + NaBr =>
C3H7Br + NaOH = C3H8O + NaBr
Cl2(g) + H2O(l) = HCl + O2 =>
2 Cl2(g) + 2 H2O(l) = 4 HCl + O2
Zn(NO3)2 + NH4OH = Zn(NH3)4(OH)2 + NH4(NO3)2 + H2O =>
17 Zn(NO3)2 + 82 NH4OH = 17 Zn(NH3)4(OH)2 + 16 NH4(NO3)2 + 54 H2O
SO2 + HCl = SCl4 + H2O =>
SO2 + 4 HCl = SCl4 + 2 H2O
Na + Cl2 = NaCl =>
2 Na + Cl2 = 2 NaCl
Cl2 + NaBr = NaCl + Br2 =>
Cl2 + 2 NaBr = 2 NaCl + Br2
Fe + Cl2 = FeCl3 =>
2 Fe + 3 Cl2 = 2 FeCl3
P + O2 = P2O54 =>
2 P + 27 O2 = P2O54
AlBr3 + C = AlC3 + Br2 =>
2 AlBr3 + 6 C = 2 AlC3 + 3 Br2
ZnSO4 + NaCl = ZnCl2 + Na2SO4 =>
ZnSO4 + 2 NaCl = ZnCl2 + Na2SO4
AgSO4 + LiOH = LiSO4 + AgOH =>
AgSO4 + LiOH = LiSO4 + AgOH
Pb2H3 + O2 = PbO2 + H2O =>
4 Pb2H3 + 11 O2 = 8 PbO2 + 6 H2O
Al + KOH = Al(OH)3 + K =>
Al + 3 KOH = Al(OH)3 + 3 K
(NH)4NO3 + O2 = NO2 + H2O =>
2(NH)4NO3 + 9 O2 = 10 NO2 + 4 H2O
Br2 + LiI = LiBr + I =>
Br2 + 2 LiI = 2 LiBr + 2 I
AlCl3 + Cu2O = Al2O3 + CuCl =>
2 AlCl3 + 3 Cu2O = Al2O3 + 6 CuCl
KI + H2SO4 + KMnO4 = K2SO4 + MnSO4 + I + H2O =>
5 KI + 4 H2SO4 + KMnO4 = 3 K2SO4 + MnSO4 + 5 I + 4 H2O
KHCO3(s)HCl(aq) = CO2H2OKCl =>
KHCO3(s)HCl(aq) = CO2H2OKCl
ZnSO4 + NaCl = Na2(SO4) + ZnCl2 =>
ZnSO4 + 2 NaCl = Na2(SO4) + ZnCl2
Cr2O2{-} + Cl{-} + H{+} = Cr3{+} + H2O + Cl2 =>
6 Cr2O2{-} + 14 Cl{-} + 24 H{+} = 4 Cr3{+} + 12 H2O + 7 Cl2
FeCO3 = Fe3O4 + CO + CO2 =>
3 FeCO3 = Fe3O4 + CO + 2 CO2
Al + Cu(ClO3) = Al(ClO3)3 + Cu =>
Al + 3 Cu(ClO3) = Al(ClO3)3 + 3 Cu
FeCO3 = Fe3O4 + CO + CO2 =>
3 FeCO3 = Fe3O4 + CO + 2 CO2
ZnSO4 + NaCl = Na2(SO4) + ZnCl2 =>
ZnSO4 + 2 NaCl = Na2(SO4) + ZnCl2
CH3COOH + NaHCOO3 = CH3COONa + H2O + CO2 =>
5 CH3COOH + 4 NaHCOO3 = 4 CH3COONa + 6 H2O + 6 CO2
MnO2 + NaNO2 + HNO3 = Mn(NO3)2 + H2O + NaNO3 =>
MnO2 + NaNO2 + 2 HNO3 = Mn(NO3)2 + H2O + NaNO3
Fe(OH)3(s) + H2SO4(ac) = Fe2(SO4)3(ac) + H2O =>
2 Fe(OH)3(s) + 3 H2SO4(ac) = Fe2(SO4)3(ac) + 6 H2O
HF = FH =>
HF = FH
FeCO3 = FeO + CO2 =>
FeCO3 = FeO + CO2
Fe + H3PO4 = FePO4 + H3 =>
Fe + H3PO4 = FePO4 + H3
Fe2(SO4)3 + NaS = FeS + Na2SO4 + S =>
Fe2(SO4)3 + 6 NaS = 2 FeS + 3 Na2SO4 + 4 S
Al + Hg(CH3CO2)2 = Hg + Al(CH3CO2)2 =>
Al + Hg(CH3CO2)2 = Hg + Al(CH3CO2)2
PbCO3 + Cu(NO3)2 = Pb(NO3)2 + CuCO3 =>
PbCO3 + Cu(NO3)2 = Pb(NO3)2 + CuCO3
K2S + HNO3 = S + KNO3 + NO + H2O =>
3 K2S + 8 HNO3 = 3 S + 6 KNO3 + 2 NO + 4 H2O
Cu(NO3)2 + Na(Cl)2 = Cu(Cl)2 + Na(NO3)2 =>
Cu(NO3)2 + Na(Cl)2 = Cu(Cl)2 + Na(NO3)2
NaOH + Cl2 + NH3 = N2H4 + NaCl + H2O =>
2 NaOH + Cl2 + 2 NH3 = N2H4 + 2 NaCl + 2 H2O
FeCl2 + HCl + K2Cr2O7 = FeCl3 + K2Cl + CrCl3 + H2O =>
7 FeCl2 + 14 HCl + K2Cr2O7 = 7 FeCl3 + K2Cl + 2 CrCl3 + 7 H2O
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