3. IDENTIFY the following reactions as Oxidation / Reduction reactions ? a) PbO + H2 --> Pb + H2O
b) ZnO + C --> Zn + CO
c) H2S + Cl2--> 2HCl + S
d) Fe203 + 3C0 --> 2Fe + 3CO2
e) PbS + 4H202 --- PbSO4 + 4H2O

a) Is reduction AND oxidation
[ Reduction: since there is a loss of oxygen in Pb]
[Oxidation: since there is a gain of oxygen in H2O]

b) Reduction AND oxidation
[Reduction: since there is a loss of oxygen in Zn]
[Oxidation: since there is gain of oxygen in CO]

c) Oxidisation AND reduction
[Oxidisation: since there is a loss of electrons in S]
[Reduction: since there is a gain of electrons in Cl^-1]

d)Reduction AND oxidation
[Reduction: since there is a loss of oxygen in 2Fe]
[Oxidation: since there is a gain of oxygen in 3CO2]

e) Oxidation AND Reduction
[Oxidation: since there is a gain of oxygen in PbSO4]
[Reduction: since there is a loss of oxygen in 4H2O]

( Hope this was helpful... And I apologize if any of the answers are incorrect I just did this chapter as well!)

Remember: Oxidation requires—Gain of O2
—Loss of H2
—Loss of elections

Reduction requires—loss of O2
—Gain of H2
—gain of electrons

Idon't know hope someone you

Is there an image with it