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Arsenic Acid is composed up of three hydrogen atoms, one arsenic atom, and four oxygen atoms, containing three different elements form the periodic table. The formula for Arsenic Acid is represented as H₃AsO₄, and can also be represented as AsO(OH)₃. Below represents a ball-and-stick model of the compound. Arsenic Acid has three hydrogen bond donors and four hydrogen bond acceptors. Arsenic acid is a chemical bond.

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Arsenic Acid is prepared by reacting:

- Moist Arsenic with Ozone, or Trioxygen,
- Arsenic Trioxide  with concentrated Nitric Acid,
- Arsenic Pentoxide in water,
- Pyroarsenic Acid in cold water

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There is not much known about Arsenic Acid's history. Albert the Great, or Albertus Magnus, was an alchemist who discovered arsenic by heating orpiment, a common compound of arsenic, with soap. Nearly pure arsenic was formed in this process. Later, they discovered arsenic acid. It is not known how.

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Arsenic Acid's Physical and Chemical Properties

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Arsenic Acid's Physical and Chemical Properties

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Arsenic Acid is a liquid chemical compound and  chemical bond, appearing as white translucent crystals, and it is hygroscopic, or it absorbs moisture from the air. Its molecular weight, or molar mass, is 143.943 g/mol, and its molar density is 2.5 G/cm^3. Arsenic acid's melting point is 35.5 degrees Celsius (95.9 degrees Fahrenheit, or 308.6 Kelvins), and its boiling point is 120 degrees Celsius (248 degrees Fahrenheit or 393 Kelvins). Other names for Arsenic acid include Orthoarsenic Acid, Desiccant L-10, or Arsoric Acid. Its molecular shape is tetrahedral, and it is toxic, as well as dangerous for the environment. It is also non-flammable. Below shows an example of a tetrahedral molecular shape.

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Commercial applications of arsenic acid are often limited by its toxicity. It has found an occasional use as a wood preservative, broad-spectrum biocide, a finishing agent for glass and metal, and a reagent in the synthesis of some dyestuffs and organic arsenic compounds. It can also be used as soil sterilant.

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While Arsenic Acid is toxic and dangerous for the environment, it provides some benefits. It is mainly used as a wood preservative, a finishing agent for glass and metal, and a reagent in the synthesis of some dyes and organic arsenic compounds. It is also used as an insecticide, or a substance used for killing insects, as well as a fungicide, or a chemical that destroys fungus.