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  1. Arsenous acid - Wikipedia

    • Arsenous acid (or arsenious acid) is the inorganic compound with the formula H3AsO3. It is known to occur in aqueous solutions, but it has not been isolated as a pure material, although this fact does not detract from the significance of As(OH)3. 展开

    Properties

    As(OH)3 is a pyramidal molecule consisting of three hydroxyl groups bonded to arsenic. The H NMR spectrum of arsenous acid solution…

    Synthesis

    The preparation of As(OH)3 involves a slow hydrolysis of arsenic trioxide in water. Addition of base converts arsenous acid to the arsenite ions [AsO(OH)2] , [AsO2(OH)] , and [AsO3] .

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    Reactions

    With its first pKa being 9.2, As(OH)3 is a weak acid. Reactions attributed to aqueous arsenic trioxide are due to arsenous acid and its conjugate bases.
    Like arsenic trioxide, arsenous acid is sometimes amphoteric. For example, it re…

    Toxicology

    Arsenic-containing compounds are highly toxic and carcinogenic. The anhydride form of arsenous acid, arsenic trioxide, is used as a herbicide, pesticide, and rodenticide.

     
  1. Arsenous acid | AsH3O3 | CID 545 - PubChem

    2009年2月22日 · Arsenous acid is a chemical compound of arsenic. It is the hydrolyzed form of arsenic trioxide and is found in aqueous solutions. Arsenic is a chemical element that has the symbol As and atomic number 33. It is a …

  2. Arsenous Acid - an overview | ScienceDirect Topics

  3. 2 Chemistry of Arsenic - The National Academies Press

  4. Chemistry of Arsenic - Arsenic - NCBI Bookshelf

    o-Arsenous acid and m-arsenous acid could form as products of the hydrolysis of As 4 O 6. By analogy with the phosphorus compound, the meta acid would be expected to be polymeric. However, the arsenic–oxygen–arsenic bond is …

  5. Arsenic compounds - Wikipedia

  6. Arsenous acid | H3AsO3 - ChemSpider

  7. Arsenous acid - Simple English Wikipedia, the free encyclopedia

  8. arsenous acid (CHEBI:49900) - EMBL-EBI

  9. Arsenous acid - WikiMili, The Best Wikipedia Reader

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