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Gold(III) chloride dihydrate

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Identification
Molecular formula
AuCl3·2H2O
CAS number
27988-77-8
IUPAC name
gold(3+);trichloride;dihydrate
State
State

At room temperature, gold(III) chloride dihydrate exists as a solid.

Melting point (Celsius)
25.00
Melting point (Kelvin)
298.00
Boiling point (Celsius)
446.00
Boiling point (Kelvin)
719.00
General information
Molecular weight
393.83g/mol
Molar mass
393.8330g/mol
Density
4.7000g/cm3
Appearence

Gold(III) chloride dihydrate typically appears as a yellow-orange crystalline solid. It is sensitive to light and moisture.

Comment on solubility

Solubility of Gold(III) Trichloride Dihydrate

Gold(III) trichloride dihydrate, with the chemical formula AuCl3·2H2O, exhibits unique solubility characteristics. This compound is known for its distinct behavior in various solvents:

  • Solubility in Water: Gold(III) trichloride dihydrate is highly soluble in water, primarily due to the ionic nature of its components. When dissolved, it dissociates into Au3+ ions and Cl- ions, leading to a vibrant yellow solution.
  • Effect of Temperature: Increased temperature generally enhances its solubility, making it easier to dissolve larger quantities in hot water compared to cold water.
  • Polar Solvents: This compound is also soluble in polar organic solvents, although the solubility may vary significantly depending on the specific solvent's characteristics.
  • Solubility Product: The solubility product constant (Ksp) plays a crucial role in understanding the saturation of this compound in aqueous solutions, contributing to studies in coordination chemistry.

Gold(III) trichloride dihydrate's solubility is an essential aspect to consider in applications such as catalysis and materials synthesis. As Dr. A. Chemist aptly put it, "The solubility of a compound can often determine its utility in chemical processes."

Interesting facts

Gold(III) Chloride Dihydrate: Interesting Facts

Gold(III) chloride dihydrate, often represented as AuCl3·2H2O, is a fascinating compound with several intriguing characteristics that make it significant in both historical and modern contexts.

Historical Significance

  • Ancient Treasures: Gold has been revered throughout history, symbolizing wealth and power. Gold(III) chloride has been used in various applications ranging from ancient alchemical practices to gold plating.
  • Staining and Dye: This compound was instrumental in early photography and in creating gold-based dyes used in ancient textiles.

Chemical Properties

  • Oxidizing Agent: Gold(III) chloride is known for its strong oxidizing properties, which can be exploited in various chemical reactions.
  • Coordinate Complexes: It readily forms complexes with organic and inorganic ligands, making it a valuable compound in coordination chemistry.

Modern Applications

  • Catalysis: This compound is utilized as a catalyst in organic synthesis, particularly in reactions that require a gold catalyst.
  • Nanotechnology: Gold(III) chloride is essential in the preparation of gold nanoparticles, which have varied applications in medicine and electronics.

In summary, gold(III) chloride dihydrate is not just a compound of gold but a bridge connecting history, chemistry, and modern technology. Whether you are a seasoned chemist or a curious student, exploring its properties opens windows to numerous applications and fascinating discoveries!

Synonyms
Auric chloride dihydrate
10294-30-1
Gold trichloride dihydrate
gold(3+);trichloride;dihydrate
Gold(III) chloride dihydrate
6F65H5EWB3
GOLD CHLORIDE, DIHYDRATE
gold chloride (AuCl3), dihydrate
Gold(III)chloridedihydrate
UNII-6F65H5EWB3
SCHEMBL17199821
DTXSID20908130
AOVRKCFLDXIUMO-UHFFFAOYSA-K
Gold(3+) chloride--water (1/3/2)