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Properties of substance:

arsenious acid

Group of substances:

inorganic

Physical appearance:

aqueous solution

Empirical formula (Hill's system for organic substances):

H3AsO3

Structural formula as text:

As(OH)3

Molar/atomic mass: 125.944

Dissociation:

pKa (1) = 9.2 (25°C, water)
pKa (2) = 13.77 (16°C, water)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 113
  2. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 55, 535 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru