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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. It reacts with nitric acid and forms soluble lead nitrate
`PbO+2HNO_(3)tounderset("Soluble")(Pb(NO_(3))_(2))+H_(2)O" (acid base reaction)"`
Nitric acid does not react with `PbO_(2)`. Both of them are strong oxidising agents. In `HNO_(3)` nitrogen is in its maximum oxidation state(+5) and in `PbO_(2)`. leads is in its maximum oxidation state (+4). Therefore, no reaction takes place.
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