Plumbate
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Plumbate

In chemistry, a plumbate is a salt having one of the several lead-containing oxoanions. Although the term plumbate can refer either to plumbate(II) or plumbate(IV), it traditionally refers specifically to plumbate(IV), whereas plumbate(II) is referred to as plumbite.

Plumbates are formed by the reaction of lead(IV) oxide, , with alkali. Plumbate salts contain either the hydrated plumbate anion, , or the anhydrous anions (meta-plumbate) or (ortho-plumbate).[1] For example, dissolving in a hot, concentrated aqueous solution of potassium hydroxide forms the potassium salt . The anhydrous salts may be synthesized by heating metal oxides or hydroxides with . All plumbate(IV) salts are very strong oxidising agents.[1] Some hydrated plumbate(IV) salts decompose upon dehydration. They are also decomposed by carbon dioxide.[2]

Lead tetroxide ("red lead"), a mixed oxide with formula , may be thought of as lead(II) ortho-plumbate(IV), . This structure is demonstrated by its reaction with nitric acid, which yields the lead(II) nitrate salt, , and .

Lead sesquioxide, , is also known, and has the structure lead(II) meta-plumbate(IV), .[1]

References

  1. ^ a b c Egon Wiberg; Nils Wiberg; Arnold Frederick Holleman (2001). Inorganic chemistry. Academic Press. p. 920. ISBN 0-12-352651-5.
  2. ^ Amit Arora (2005). Text Book Of Inorganic Chemistry. Discovery Publishing House. pp. 450-452. ISBN 81-8356-013-X.

External links


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Plumbate
 



 



 
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