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Potassium dihydrogen arsenate

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Identification
Molecular formula
KH2AsO4
CAS number
7784-41-0
IUPAC name
potassium;dihydrogen arsorate
State
State

At room temperature, potassium dihydrogen arsenate is a solid compound, typically found as crystalline powder.

Melting point (Celsius)
130.00
Melting point (Kelvin)
403.15
Boiling point (Celsius)
100.00
Boiling point (Kelvin)
373.15
General information
Molecular weight
204.01g/mol
Molar mass
204.0070g/mol
Density
2.4390g/cm3
Appearence

Potassium dihydrogen arsenate appears as colorless or white crystals.

Comment on solubility

Solubility of Potassium Dihydrogen Arsenate

Potassium dihydrogen arsenate, with the chemical formula K2HAsO4, exhibits interesting solubility characteristics in aqueous solutions. The solubility of this compound can be influenced by several factors, making it useful in various applications:

  • Solubility in Water: Potassium dihydrogen arsenate is known to be quite soluble in water. This property allows it to be easily dissolved for use in laboratory and industrial settings.
  • Temperature Dependence: As with many salts, the solubility can increase with rising temperatures, leading to higher concentrations being achieved in warmer solvents.
  • pH Sensitivity: The solubility can also be affected by the pH of the solution. In a more acidic environment, the dissolution may be enhanced due to the formation of more soluble species.

In conclusion, potassium dihydrogen arsenate's solubility in water makes it a valuable compound for various applications, particularly in fields such as agriculture and chemistry where its properties can be effectively utilized. Understanding the nuances of its solubility can lead to more efficient use in practical applications.

Interesting facts

Interesting Facts about Potassium Dihydrogen Arsenate

Potassium dihydrogen arsenate, a fascinating compound often represented by the formula KH2AsO4, is notable for its unique properties and applications. This compound is primarily used in analytical chemistry and is known for the following remarkable characteristics:

  • Biochemistry and Agriculture: Potassium dihydrogen arsenate acts as a source of arsenate ions, which are vital for certain processes in biochemistry. It is commonly utilized in agricultural practices as a fertilizer, contributing to soil nutrient content.
  • Analytical Reagent: In laboratories, this compound serves as a significant reagent in analytical chemistry, particularly in the detection and quantification of other substances.
  • Dual Role: As both a potassium and arsenic source, it offers dual benefits in various reactions, highlighting its versatility.
  • Environmental Concerns: Its arsenic component raises environmental and health concerns, as arsenic is known to be toxic in certain forms. Responsible handling and usage are crucial.
  • Historical Context: Historically, compounds containing arsenic have been of interest due to their various effects, with potassium dihydrogen arsenate being a more stable and manageable form.

In conclusion, potassium dihydrogen arsenate is an interesting compound with a rich history and a wide array of applications. It embodies the complex nature of chemistry, marrying utility with caution in its practical uses.

As an astute observer aptly stated, "Chemistry is the study of transformation, and compounds like potassium dihydrogen arsenate remind us of the delicate balance between usefulness and safety."