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Arsenic acid

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Identification
Molecular formula
H3AsO4
CAS number
7778-39-4
IUPAC name
sodium;arsoric acid
State
State

At room temperature, arsenic acid is typically found as a solid.

Melting point (Celsius)
35.50
Melting point (Kelvin)
308.65
Boiling point (Celsius)
90.00
Boiling point (Kelvin)
363.15
General information
Molecular weight
141.94g/mol
Molar mass
141.9430g/mol
Density
2.5000g/cm3
Appearence

Arsenic acid appears as a white, crystalline solid.

Comment on solubility

Solubility of Sodium Arsenate

Sodium arsenate, represented by the formula Na3AsO4, is a crystalline compound that exhibits interesting solubility characteristics. Here are some key points to consider:

  • Solubility in Water: Sodium arsenate is highly soluble in water, making it an effective compound for various applications in agriculture and chemistry.
  • Temperature Influence: The solubility tends to increase with temperature, which is a common trait for many ionic compounds. Thus, heating the solution can enhance dissolution.
  • PH Sensitivity: The solubility can also be affected by the pH of the solution. In alkaline conditions, its solubility may be further increased.
  • Precipitation Considerations: In acidic environments, sodium arsenate can precipitate out, especially when combined with certain cations, formulating less soluble arsenate salts.

Overall, the solubility of sodium arsenate under various conditions is essential for its functionality. To summarize, this compound is:

  1. Highly soluble in water
  2. Temperature-dependent for solubility
  3. pH-sensitive with potential precipitation under acidic conditions

Understanding these solubility dynamics is crucial for utilizing sodium arsenate effectively in scientific and industrial applications.

Interesting facts

Interesting Facts about Sodium Arsenate

Sodium arsenate, a compound known for its diverse applications, is an intriguing subject of study in both chemistry and environmental science. Below are some noteworthy facts about this compound:

  • Historical Context: Sodium arsenate has been utilized since the late 19th century, primarily as a pesticide and herbicide. Its effectiveness in controlling various types of pests has made it a staple in agronomy.
  • Industrial Uses: This compound serves as a strategic intermediate in the production of glass. It acts as a flux, helping to lower the melting point of raw materials and improve the process efficiency in glass manufacturing.
  • Biochemistry: In biological studies, sodium arsenate is sometimes employed as a tool to investigate arsenic's effects on cellular metabolism. The compound can disrupt various metabolic pathways, revealing critical insights into toxicity and remediation efforts.
  • Environmental Concerns: Despite its industrial utility, sodium arsenate raises significant environmental and health concerns. As a source of arsenic, it poses risks in agricultural settings and has been banned in several countries due to its toxicity.
  • Formulation and Structure: Sodium arsenate typically appears as a white crystalline solid that can form hydrates. The structure of the compound includes arsenate ions, which are crucial for its reactivity and interactions in both chemical and biological systems.

In conclusion, sodium arsenate exemplifies the dual nature of chemical compounds, highlighting the balance between utility and toxicity. Its role in various fields continues to stimulate research, encouraging a deeper understanding of arsenic compounds within science and industry.

Synonyms
XCVRTGQHVBWRJB-UHFFFAOYSA-N