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Encyclopedia > Lead(IV) oxide

Lead dioxide, PbO2, also plumbic oxide, is an oxide of lead, with lead in oxidation state +4. An oxide is a chemical compound of oxygen with other chemical elements. ... General Name, Symbol, Number lead, Pb, 82 Chemical series poor metals Group, Period, Block 14, 6, p Appearance bluish white Atomic mass 207. ... The oxidation state or oxidation number is defined as the sum of negative and positive charges in an atom, which indirectly indicates the number of electrons it has accepted or donated. ...


When hydrated, it may be called plumbic acid. Plumbic acid refers to hydrated lead dioxide. ...


Lead dioxide can dissolve in strong base to form plumbate ion, Pb(OH)62-. This can then form plumbate compounds. The plumbate ion is PbO32- or Pb(OH)62-. A plumbate (compound) is a compound containing this ion. ...


In acid conditions, it is typically reduced to lead(II) ion, Pb2+; lead(IV) ion, Pb4+, is not found in aqueous solution. Drinking water This article focuses on water as we experience it every day. ...


  Results from FactBites:
 
Inans1 (250 words)
The evolution of carbon dioxide on heating A suggests that it is a carbonate, lead(II) carbonate; the residue B is therefore an oxide, lead(II) oxide:
C lead(II) oxide (which is also called litharge) partially oxidises to the mixed oxide Pb which contains both lead(II) and lead(IV) ions.
Lead(IV) oxide is a strong oxidising agent and oxidises concentrated HCl to chlorine, J, and lead(II) chloride I.
Molecular Expressions: Science, Optics & You - Olympus MIC-D: Polarized Light Gallery - Lead Oxide (698 words)
Lead oxide constitutes a family of compounds with varying numbers of oxygen atoms per molecule, depending on the valence state (+2 or +4) of the lead, and varying crystal morphs, even with the same chemical formulas.
A mixture of 70 percent lead monoxide and 30 percent metallic lead, sometimes referred to as fl or gray oxide, is used to manufacture lead acid batteries.
Lead (IV) oxide is used as an industrial oxidizing agent, in storage batteries, and in the textile industry.
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