Home Acid Base CO2 in Ocean Electronegetivity Electron affinity Ionic charge Ionisation energy N2 cycle Metal Extracting Molecular geometry Photographic Chem. Polyatomic ions Practical Ptable Reactivity series Reactions Std Re Potential Strange Reac. Titration
Combination or Synthesis (A + B ---> AB) :
2H2 + O2 ---> 2H2O
4Fe + 3O2 ---> 2Fe2O3Fe + S ---> FeS : Video
Decomposition (AB ---> A + B) :
Single Displacement (A + BC = AC + B) :
2Na + 2H2O ---> 2NaOH + H2 : Video
Mg + 2HCl ---> MgCl2 + H2 : Video
Zn in CuSO4 solution : Video
Double Displacement AB + BC = AC + BB) :
Pb(NO3)2 + 2NaI = PbI2 + 2NaNO3 : Video
Redox Reactions:
Reduction of Copper (II) Oxide using Hydrogen CuO + H2 --heat--> Cu + H2O Video
In CuO Copper had lost 2 electrons to O.
In this reaction copper gains 2 electrons
and becomes elemental Cu.
So it is a reduction reaction.
Reduction of Copper (II) Oxide using Carbon 2CuO + C --heat--> 2Cu + CO2 Video