Identify the substance oxidized reduced, oxidizing agent and a reducing agent for each of the following reactions:

Pb(s) + PbO2(s) + 2H2SO4(aq) → 2PbSO4(s) + 2H2O(l)

Oxidised substance:-Pb


Reduced Substance:- PbO2


Reducing agent:-Pb


Oxidising agent:- PbO2


Explanation:- Oxidising agent is a reagent which can increase the O.N. of an element in a given substance.


Here, the Pb of PbO2 helps Pb to increase its oxidation number.


The reduced substance is a reagent whose oxidation state has been decreased.


Here, in this case, Pb in PbO2 has + 4 oxidation state and the O.N. is reduced to + 2 as Pb in PbSO4 in the product side is present in + 2 O.N.


The oxidised substance is a reagent whose oxidation state has been decreased.


Here, in this case, Pb has zero oxidation state and the O.N. is increased to + 2 as Pb in PbSO4 in the product side is present in + 2 O.N.


Reducing Agent is a reagent which lowers the oxidation number of an element in a given substance.


Here, Pb helps itself to decrease its oxidation number.


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