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Nitric acid is an oxidising agent and re...

Nitric acid is an oxidising agent and reacts with PbO but it does not react with `PbO_(2)`. Explain why ?

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PbO is a base but it reacts with `HNO_(3)` from lead nitrate.
`PbO+2HNO_(3)tounderset("soluble")(Pb(NO_(3))_(2))+H_(2)O`
Nitric acid does not react with `PbO_(2)` because both act as oxidising agents. In `HNO_(3)` oxidation number of N is (+5) as same `PbO_(2)` oxidation number of Pb is (+4). So, reaction is not possible.
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