Identify oxidation & reduction reaction oxidising and reducing agent
1.Pb3O4 + HCl ---------> PbCl2 + Cl2 + H2O is a redox reaction since oxidation number of Pb changes from +8/3 to +2 and Cl changes from -1 to 0
Oxidizing agent - Pb3O4
Reducing agent - HCl
2.CuSO4 + Zn → ZnSO4 + Cu is a redox reaction since oxidation number of Cu changes from +2 to 0 and Zn changes from 0 to +2
Oxidizing agent – CuSO4
Reducing agent – Zn
3.Fe + S → FeS is a redox reaction since oxidation number of Fe changes from 0 to +2 and S changes from 0 to -2.
Oxidizing agent – S
Reducing agent – Fe
4.H2S + SO2 → H2O + S is a redox reaction
Oxidation number of S changes from +4 in SO2 to 0 in S (S is reduced)
oxidation of S goes from -2 in H2S to 0 in S (S is oxidized)
H2S – reducing agent
SO2 – oxidizing agent