plumbite

In chemistry, plumbite is the {{Chem2|PbO2(2-)}} oxyanion or hydrated forms, or any salt containing this anion. In these salts, lead is in the oxidation state +2. It is the traditional term for the IUPAC name plumbate(II).

For example, lead(II) oxide (PbO) dissolves in alkali to form salts containing the {{Chem2|HPbO2-}} anion (hydrogen plumbite):{{Cite book |title= Text Book Of Inorganic Chemistry |author= Amit Arora |publisher= Discovery Publishing House |year= 2005 |isbn= 81-8356-013-X |pages= 450–452}}

:{{chem2|PbO + OH- → HPbO2-}}

Lead(II) hydroxide also dissolves in excess alkali to form the {{Chem2|[Pb(OH)6](4-)}} anion (hexahydroxyplumbate(II)):{{Cite book |title= A-level chemistry |series= A-Level Chemistry Series |author= E. N. Ramsden |edition= 4th |publisher= Nelson Thornes |year= 2000 |isbn= 0-7487-5299-4 |page= [https://archive.org/details/alevelchemistry0004rams/page/434 434] |url= https://archive.org/details/alevelchemistry0004rams/page/434}}

:{{Chem2|Pb(OH)2 + 4 OH- → [Pb(OH)6](4-)}}

The plumbite ion is a weak reducing agent. When it functions as one, it is oxidized to the plumbate ion.