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  Inorganic Chemistry

LEAD DIOXIDE, PBO2 :

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IIt is prepared by heating Pb3O4(2PbO + PbO2) with dilute HNO3

                                     Δ
PB3O4 + 4HNO3 ——> 2 Pb (NO3)2 + 2H2O + PbO2

It is amphoteric in nature and dissolve in NaOH to form sodium plumbate.

2NaOH + PbO2 ——> Na2PbO3 + H2O

It is a powerful oxidizing agent. It reacts with conc. HCl on warming to give PbCl4

                      Warm
PbO2 + 4 HCl ———> PbCl4 + H2O

It is a chocolate brown solid insoluble in water and nitric acid. It is a powerful oxidizing agent. It is amphoteric in nature and is used in lead storage batteries and in safety matches.

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