Các phương trình phản ứng khó Cl2 + AgNO3 + H2O = AgCl + HClO3 + HNO3 => 3 Cl2 + 5 AgNO3 + 3 H2O = 5 AgCl + HClO3 + 5 HNO3 HNO3 + Ba(OH)2 = Ba(NO3)2 + H2O => 2 HNO3 + Ba(OH)2 = Ba(NO3)2 + 2 H2O Cu + HNO3 = Cu(NO3)2 + NO + H2O => 3 Cu + 8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O PbO2 + HCl = PbCl2 + Cl2 + H2O => PbO2 + 4 HCl = PbCl2 + Cl2 + 2 H2O KBr + Mg(OH)2 = KOH + MgBr2 => 2 KBr + Mg(OH)2 = 2 KOH + MgBr2 HNO3 + KOH = KNO3 + H2O => HNO3 + KOH = KNO3 + H2O NaOH + Fe(NO3)3 = NaNO3 + Fe(OH)3 => 3 NaOH + Fe(NO3)3 = 3 NaNO3 + Fe(OH)3 Ca + H2O = CaOH2 => Ca + H2O = CaOH2 AlCl3 + NaOH = NaCl3 + AlOH => AlCl3 + NaOH = NaCl3 + AlOH HCOOH + O2 = CO2 + H2O => 2 HCOOH + O2 = 2 CO2 + 2 H2O NH3 + BaCl2 = NCl2 + BaH3 => NH3 + BaCl2 = NCl2 + BaH3 KNO3 + Fe = FeO + KNO2 => KNO3 + Fe = FeO + KNO2 Fe + O2 = Fe2O3 => 4 Fe + 3 O2 = 2 Fe2O3 KNO3 + Fe = Fe2O3 + KNO2 => 3 KNO3 + 2 Fe = Fe2O3 + 3 KNO2 Ca + H2O = Ca(OH)2 + H2 => Ca + 2 H2O = Ca(OH)2 + H2 C12H22O11 + O2 = CO2 + H2O => C12H22O11 + 12 O2 = 12 CO2 + 11 H2O Si2H3 + O2 = Si1O2 + H2O => 4 Si2H3 + 11 O2 = 8 Si1O2 + 6 H2O Si2H3 + O2 = Si1O2 + H2O => 4 Si2H3 + 11 O2 = 8 Si1O2 + 6 H2O Fe3O4 + CO = FeO + CO2 => Fe3O4 + CO = 3 FeO + CO2 K + ZnCl2 = KZnCl2 => K + ZnCl2 = KZnCl2 Fe + Cl2 = FeCl3 => 2 Fe + 3 Cl2 = 2 FeCl3 Zn + CrCl3 = CrCl2 + ZnCl2 => Zn + 2 CrCl3 = 2 CrCl2 + ZnCl2 Fe + Cl2 = FeCl3 => 2 Fe + 3 Cl2 = 2 FeCl3 Fe2O3 + CO = Fe3O4 + CO2 => 3 Fe2O3 + CO = 2 Fe3O4 + CO2 Fe2O3 + CO = Fe3O4 + CO2 => 3 Fe2O3 + CO = 2 Fe3O4 + CO2 H2C6O5H7{-1} + H2O = H3C6O5H7 + OH{-1} => H2C6O5H7{-1} + H2O = H3C6O5H7 + OH{-1} K2Cr2O7 + HCl + H2S = KCl + CrCl3 + S + H2O => K2Cr2O7 + 8 HCl + 3 H2S = 2 KCl + 2 CrCl3 + 3 S + 7 H2O KMnO4 + HCl = KCl + MnCl2 + H2O + Cl2 => 2 KMnO4 + 16 HCl = 2 KCl + 2 MnCl2 + 8 H2O + 5 Cl2 CO2 + H2 = CH2O + H2O => CO2 + 2 H2 = CH2O + H2O C3H8 + O2 = CO2 + H2O => C3H8 + 5 O2 = 3 CO2 + 4 H2O CH3CH2CHO + O2 = CO2 + H2O => CH3CH2CHO + 4 O2 = 3 CO2 + 3 H2O F2 + NaOH = NaF + O2 + H2O => 2 F2 + 4 NaOH = 4 NaF + O2 + 2 H2O KClO3 = KCl + O2 => 2 KClO3 = 2 KCl + 3 O2 C5H12 + O2 = H2O + CO2 => C5H12 + 8 O2 = 6 H2O + 5 CO2 C5H12 + O = H2O + CO2 => C5H12 + 16 O = 6 H2O + 5 CO2 Fe2O3 + CO = Fe + CO2 => Fe2O3 + 3 CO = 2 Fe + 3 CO2 NaOH + (NH4)3PO4 = Na3PO4 + H2O + NH3 => 3 NaOH + (NH4)3PO4 = Na3PO4 + 3 H2O + 3 NH3 C2H6O + O2 = CO2 + H2O => C2H6O + 3 O2 = 2 CO2 + 3 H2O Mg3N2 + H2O = Mg(OH)2 + NH3 => Mg3N2 + 6 H2O = 3 Mg(OH)2 + 2 NH3 C8H18 + O2 = CO2 + H2O => 2 C8H18 + 25 O2 = 16 CO2 + 18 H2O C12H22O11 + O2 = CO2 + H2O => C12H22O11 + 12 O2 = 12 CO2 + 11 H2O H2C2O4 + CaCl2 = CaC2O4 + HCl => H2C2O4 + CaCl2 = CaC2O4 + 2 HCl KMnO4 + HCl = KCl + MnCl2 + H2O + Cl2 => 2 KMnO4 + 16 HCl = 2 KCl + 2 MnCl2 + 8 H2O + 5 Cl2 As + O2 = As2O5 => 4 As + 5 O2 = 2 As2O5 As + S = As2S3 => 2 As + 3 S = As2S3 Na2CO3 = Na + CO3 => Na2CO3 = 2 Na + CO3 Li + N2 = Li3N => 6 Li + N2 = 2 Li3N Ca(OH)2 + HNO3 = Ca(NO3)2 + H2O => Ca(OH)2 + 2 HNO3 = Ca(NO3)2 + 2 H2O Al + HCl = AlCl3 + H2 => 2 Al + 6 HCl = 2 AlCl3 + 3 H2 Mg + FeCl3 = MgCl2 + Fe => 3 Mg + 2 FeCl3 = 3 MgCl2 + 2 Fe . Các phương trình phản ứng khó Cl2 + AgNO3 + H2O = AgCl + HClO3 + HNO3 => 3 Cl2 + 5 AgNO3