Gold(III) Oxide (Au2O3)-Powder

Gold(III) Oxide (Au2O3)-Powder introduce:

Characteristic




Gold(III) oxide (Au2O3) is the most stable oxide of gold. It is a red-brown, thermally unstable solid that decomposes at 160 °C. The hydrated form is weakly acidic and dissolves in concentrated alkali to form salts that are believed to contain the Au(OH)4− ion.




Chemical formula:Au2O3

Molar mass:441.93g/mol

Appearance:red-brown solid

Density:11.34 g/cm3 at 20 °C

Melting point:160 °C (320 °F; 433 K) (decomposes)

Solubility in water:insoluble in water, soluble in hydrochloric and nitric acid

Crystal structure:Orthorombic




Application




It is used in aerospace and electrochemical applications such as fuel cells in which they exhibit ionic conductivity. It acts as strong reducing agent in redox reactions.