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Question

the conversion of PbO2 to Pb(NO3)2 IS

a- oxidation

b- reduction

c- neither oxidation nor reduction

d- both oxidation and reduction

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Solution

Oxidation state of Pb in PbO2 is +4 and in Pb(NO3)2 is +2. Thus in the conversion of ​PbO2 to Pb(NO3)2 oxidation state of Pb is decreasing thus it is a reduction reaction.

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