Lead dioxide
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(Redirected from Lead(IV) oxide)
Lead dioxide, PbO2, also plumbic oxide, lead peroxide, is an oxide of lead, with lead in oxidation state +4.
When hydrated, it may be called plumbic acid.
Lead dioxide is amphoteric.
Lead dioxide can dissolve in strong base to form plumbate ion, Pb(OH)62-. This can then form plumbate compounds.
In acid conditions, it is typically reduced to lead(II) ion, Pb2+; lead(IV) ion, Pb4+, is not found in aqueous solution.
Lead dioxide is a somewhat strong oxidizer. With many things, it can produce lead(II) ion, Pb2+, or plumbous hydroxide, Pb(OH)2.
Lead dioxide is a good electrical conductor. The reason for this, recently propsed, is due to a lack of oxygen ions leaving the oxide charged. This results in PbO2 being metallic.
