Oxidation and reduction equations:
Cd + NiO = CdO + Ni. Write the balanced oxidation 1/2 reaction equation and balanced reduction 1/2 reaction. Be sure to include the proper # of electrons in the equations.
I know that Loss of electrons = oxidation and gaining of electrons= reduction but i have no idea what this is asking.
The equation you are working with is known as an oxidation-reduction equation. Basically, the part of the equation that donates electrons, cadmium, is known as the reducing agent. It is willing to donate 2 electrons to the nickel oxide. The nickel oxide is called the oxidizing agent, for two reasons: it is accepting the 2 electrons cadmium is offering and giving over oxygen to cadmium to bind to in order to make cadmium oxide. The two half equations should look something like this:
Cd ---> (Cd++) + 2e- (this is the reducing agent giving up electrons)
NiO + 2e- ---> Ni + (O--) (this is the oxidizing agent providing the oxygen)
The 2 half equations add up to give the net equation given in the question. The 2 electrons from each half reaction cancel each other out.